Tag Archives: nmrv worm gearbox

China supplier Industrial Aluminium Stainless Steel Cast Iron NEMA Nmrv Worm Wheel Drive Motor Speed Reducer Reduction Gearbox components of gearbox

Product Description

Technical data list:

Type:	Worm Gear Speed Reducer
Model:	NMRV571–150
Ratio:	1:7.5,10,15,20,25,30,40,50,60,80,100
Color:	Blue/Silver Or On Customer Request
Material	Housing: Blue-Coloured Cast-Iron Worm Gear-Copper-10-3# Worm-20CrMn Ti with carburizing and quenching, surface harness is 56-62HRC Shaft-chromium steel-45#
Lubricant:	Synthetic&Mineral
Bearing:	C&U Bearing
Seal:	high quality
Warranty:	-30-40°C
ICE FLANGE	80B5,90B5,100B5,112B5,132B5,160B5
Rated power:	0.06KW,0.12KW,0.25KW,0.75KW,1.5KW,3KW,5.5KW,7.5KW
Application	Metallurgical machinery, food machinery, stage machinery, welding machinery, road machinery, amusement machines, packaging machinery, Rubber and plastic machinery, environmental protection machinery ,engineering machinery, construction machinery, machine tool industry, automotive industry, logistics and transportation and so on

NMRV	PAM	N	M	P	D
	ICE				5	7.5	10	15	20	25	30	40	50	60	80	100
25	56B14	50	65	80	9	9	9	9	9		9	9	9	9
30	63B5	95	115	140	11	11	11	11	11	11	11	11	11
	63B14	60	75	90
	56B5	80	100	120	9	9	9	9	9	9	9	9	9	9	9
	56B14	50	65	80
40	71B5	110	130	160	14	14	14	14	14	14	14	14
	71B14	70	85	105
	63B5	95	115	140	11	11	11	11	11	11	11	11	11	11	11	11
	63B14	60	75	90
	56B5	80	100	120									9	9	9	9
50	80B5	130	165	200	19	19	19	19	19	19	19
	80B14	80	100	120
	71B5	110	130	160	14	14	14	14	14	14	14	14	14	14	14
	71B14	70	85	105
	63B5	95	115	140								11	11	11	11	11
63	90B5	130	165	200		24	24	24	24	24	24
	90B14	95	115	140
	80B5	130	165	200		19	19	19	19	19	19	19	19	19
	80B14	80	100	120
	71B5	110	130	160								14	14	14	14	14
	71B14	70	85	105
75	100/112B5	180	215	250		28	28	28
	100/112B14	110	130	150
	90B5	130	165	200		24	24	24	24	24	24	24
	90B14	95	115	140
	80B5	130	165	200					19	19	19	19	19	19	19	19
	80B14	80	100	120
	71B5	110	130	160									14	14	14	14
90	100/112B5	190	215	250		28	28	28	28	28	28
	100/112B14	110	130	160
	90B5	130	165	200		24	24	24	24	24	24	24	24	24
	90B14	95	115	140
	80B5	130	165	200								19	19	19	19	19
	80B14	80	100	120
110	132B5	230	265	300		38	38	38	38
	100/112B5	180	215	250		28	28	28	28	28	28	28	28	28
	90B5	130	165	200						24	24	24	24	24	24	24
	80B5	130	165	200											19	19
130	132B5	230	265	300		38	38	38	38	38	38	38
	100/112B5	180	215	250						28	28	28	28	28	28	28
	90B5	130	165	200											24	24
150	160B5	250	300	350		42	42	42	42	42
	132B5	230	265	250					38	38	38	38	38	38
	100/112B5	180	215	200									28	28	28	28

Components:

1. Housing: Die-cast Aluminum Alloy Gearbox (RV571~RV090)
Cast Iron Gearbox (RV110~RV150)
2. Worm Wheel: Wearable Tin Bronze Alloy, Aluminum Bronze Alloy
3. Worm Shaft: 20Cr Steel, carburizing, quenching, grinding, surface hardness 56-62HRC, 0.3-0.5mm remaining carburized layer after precise grinding
4. Input Configurations:
Equipped with Electric Motors (AC Motor, Brake Motor, DC Motor, Servo Motor)
IEC-normalized Motor Flange
Solid Shaft Input
Worm Shaft Tail Extension Input

5. Output Configurations: Keyed Hollow Shaft Output
Hollow Shaft with Output Flange
Plug-in CHINAMFG Shaft Output
6. Spare Parts: Worm Shaft Tail Extension, Single Output Shaft, Double Output Shaft, Output Flange, Torque Arm, Dust Cover
7. Gearbox Painting:
Aluminum Alloy Gearbox:
After Shot Blasting, Anticorrosion Treatment and Phosphating, Paint with the Color of RAL 5571 Gentian Blue or RAL 7035 Light Grey
Cast Iron Gearbox:
After Painting with Red Antirust Paint, Paint with the Color of RAL 5571 Gentian Blue

Workshop show

FAQ

Q 1. What is your terms of packing?
A: Generally, we pack our goods in single color box. If you have special request about packing, pls negotiate with us in advance, we can pack the goods as your request.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages
before you pay the balance. Other payments terms, pls negotiate with us in advance, we can discuss.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.

Q4. How about your delivery time?
A: Generally, it will take 25 to 30 days after receiving your advance payment. The specific delivery time depends
on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and
the courier cost.We welcome sample order.

Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q8: How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them,
no matter where they come from. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application:	Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery
Function:	Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout:	Coaxial
Hardness:	Hardened Tooth Surface
Installation:	Torque Arm Type
Step:	Single-Step

Samples:	US$ 20/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

Is it Possible to Reverse the Direction of a Worm Gearbox?

Yes, it is possible to reverse the direction of a worm gearbox by changing the orientation of either the input or output shaft. However, reversing the direction of a worm gearbox can have some implications that need to be considered:

Efficiency: Reversing the direction of a worm gearbox can potentially affect its efficiency. Worm gearboxes are typically more efficient in one direction of rotation due to the design of the worm and worm wheel.
Backlash: Reversing the direction of rotation might lead to increased backlash or play in the gearbox, which can impact precision and smooth operation.
Lubrication: Depending on the gearbox’s design, reversing the direction could affect lubrication distribution and lead to uneven wear on the gear teeth.
Load: Reversing the direction might also impact the gearbox’s load-carrying capacity, especially if it’s designed for predominantly one-way operation.
Noise and Vibration: Direction reversal can sometimes result in increased noise and vibration due to changes in gear engagement and meshing behavior.

If you need to reverse the direction of a worm gearbox, it’s advisable to consult the gearbox manufacturer’s guidelines and recommendations. They can provide insights into whether the specific gearbox model is suitable for reversible operation and any precautions or adjustments needed to ensure proper functioning.

worm gearbox

Does a Worm Reducer Require Frequent Maintenance?

Worm reducers generally require less frequent maintenance compared to some other types of gearboxes due to their design and operating characteristics. However, maintenance is still essential to ensure optimal performance and longevity. Here are some key points to consider:

Lubrication: Proper lubrication is crucial for worm gearboxes. Regularly check the lubricant level and quality to prevent wear and overheating. Lubricant should be changed as recommended by the manufacturer.
Inspections: Periodically inspect the gearbox for signs of wear, damage, or oil leaks. Check for any unusual noises, vibrations, or changes in performance that could indicate a problem.
Tightening and Alignment: Check and tighten any loose fasteners and ensure that the gearbox is properly aligned. Misalignment can lead to increased wear and reduced efficiency.
Seal Maintenance: Inspect and maintain seals to prevent oil leakage and contaminants from entering the gearbox.
Cleaning: Keep the gearbox clean from debris and contaminants that could affect its performance. Regular cleaning can prevent premature wear and damage.
Load and Speed: Ensure that the gearbox is operating within its rated load and speed limits. Exceeding these limits can lead to accelerated wear and potential failure.
Environmental Conditions: Consider the operating environment of the gearbox. Extreme temperatures, humidity, and other factors can impact the gearbox’s performance and longevity.

While worm gearboxes are known for their durability and self-locking feature, neglecting maintenance can lead to premature wear, reduced efficiency, and potential breakdowns. Following the manufacturer’s recommendations for maintenance intervals and procedures is essential to keep the worm reducer in optimal condition.

worm gearbox

How Does a Worm Gearbox Compare to Other Types of Gearboxes?

Worm gearboxes offer unique advantages and characteristics that set them apart from other types of gearboxes. Here’s a comparison between worm gearboxes and some other common types:

Helical Gearbox: Worm gearboxes have higher torque multiplication, making them suitable for heavy-load applications, while helical gearboxes are more efficient and offer smoother operation.
Bevel Gearbox: Worm gearboxes are compact and can transmit motion at right angles, similar to bevel gearboxes, but worm gearboxes have self-locking capabilities.
Planetary Gearbox: Worm gearboxes provide high torque output and are cost-effective for applications with high reduction ratios, whereas planetary gearboxes offer higher efficiency and can handle higher input speeds.
Spur Gearbox: Worm gearboxes have better shock load resistance due to their sliding motion, while spur gearboxes are more efficient and suitable for lower torque applications.
Cycloidal Gearbox: Cycloidal gearboxes have high shock load capacity and compact design, but worm gearboxes are more cost-effective and can handle higher reduction ratios.

While worm gearboxes have advantages such as high torque output, compact design, and self-locking capability, the choice between gearbox types depends on the specific requirements of the application, including torque, efficiency, speed, and space limitations.

China supplier Industrial Aluminium Stainless Steel Cast Iron NEMA Nmrv Worm Wheel Drive Motor Speed Reducer Reduction Gearbox components of gearbox
editor by CX 2024-03-28

China high quality Durable Nmrv Worm Gearbox with Electric Motor for Transmission Device components of gearbox

Product Description

Main Materials:
1)housing:aluminium alloy ADC12(size 571-090); die cast iron HT200(size 110-150);
2)Worm:20Cr, ZI Involute profile; carbonize&quencher heat treatment make gear surface hardness up to 56-62 HRC; After precision grinding, carburization layer’s thickness between 0.3-0.5mm.
3)Worm Wheel:wearable stannum alloy CuSn10-1

Detailed Photos

Combination Options:
Input:with input shaft, With square flange,With IEC standard input flange
Output:with torque arm, output flange, single output shaft, double output shaft, plastic cover
Worm reducers are available with diffferent combinations: NMRV+NMRV, NMRV+NRV, NMRV+PC, NMRV+UDL, NMRV+MOTORS

Exploded View:

Product Parameters

Old Model	New Model	Ratio	Center Distance	Power	Input Dia.	Output Dia.	Output Torque	Weight
RV571		7.5~100	25mm	0.06KW~0.12KW	Φ9	Φ11	21N.m	0.7kgs
RV030	RW030	7.5~100	30mm	0.06KW~0.25KW	Φ9(Φ11)	Φ14	45N.m	1.2kgs
RV040	RW040	7.5~100	40mm	0.09KW~0.55KW	Φ9(Φ11,Φ14)	Φ18(Φ19)	84N.m	2.3kgs
RV050	RW050	7.5~100	50mm	0.12KW~1.5KW	Φ11(Φ14,Φ19)	Φ25(Φ24)	160N.m	3.5kgs
RV063	RW063	7.5~100	63mm	0.18KW~2.2KW	Φ14(Φ19,Φ24)	Φ25(Φ28)	230N.m	6.2kgs
RV075	RW075	7.5~100	75mm	0.25KW~4.0KW	Φ14(Φ19,Φ24,Φ28)	Φ28(Φ35)	410N.m	9.0kgs
RV090	RW090	7.5~100	90mm	0.37KW~4.0KW	Φ19(Φ24,Φ28)	Φ35(Φ38)	725N.m	13.0kgs
RV110	RW110	7.5~100	110mm	0.55KW~7.5KW	Φ19(Φ24,Φ28,Φ38)	Φ42	1050N.m	35.0kgs
RV130	RW130	7.5~100	130mm	0.75KW~7.5KW	Φ24(Φ28,Φ38)	Φ45	1550N.m	48.0kgs
RV150	RW150	7.5~100	150mm	2.2KW~15KW	Φ28(Φ38,Φ42)	Φ50		84.0kgs

GMRV Outline Dimension:

GMRV	A	B	C	C1	D(H8)	E(h8)	F	G	G1	H	H1	I	M	N	O	P	Q	R	S	T	BL	β	b	t	V
030	80	97	54	44	14	55	32	56	63	65	29	55	40	57	30	75	44	6.5	21	5.5	M6*10(n=4)	0°	5	16.3	27
040	100	121.5	70	60	18(19)	60	43	71	78	75	36.5	70	50	71.5	40	87	55	6.5	26	6.5	M6*10(n=4)	45°	6	20.8(21.8)	35
050	120	144	80	70	25(24)	70	49	85	92	85	43.5	80	60	84	50	100	64	8.5	30	7	M8*12(n=4)	45°	8	28.3(27.3)	40
063	144	174	100	85	25(28)	80	67	103	112	95	53	95	72	102	63	110	80	8.5	36	8	M8*12(n=8)	45°	8	28.3(31.3)	50
075	172	205	120	90	28(35)	95	72	112	120	115	57	112.5	86	119	75	140	93	11	40	10	M8*14(n=8)	45°	8(10)	31.3(38.3)	60
090	206	238	140	100	35(38)	110	74	130	140	130	67	129.5	103	135	90	160	102	13	45	11	M10*16(n=8)	45°	10	38.3(41.3)	70
110	255	295	170	115	42	130	–	144	155	165	74	160	127.5	167.5	110	200	125	14	50	14	M10*18(n=8)	45°	12	45.3	85
130	293	335	200	120	45	180	–	155	170	215	81	179	146.5	187.5	130	250	140	16	60	15	M12*20(n=8)	45°	14	48.8	100
150	340	400	240	145	50	180	–	185	200	215	96	210	170	230	150	250	180	18	72.5	18	M12*22(n=8)	45°	14	53.8	120

Company Profile

About CHINAMFG Transmission:
We are a professional reducer manufacturer located in HangZhou, ZHangZhoug province.
Our leading products is full range of RV571-150 worm reducers , also supplied GKM hypoid helical gearbox, GRC inline helical gearbox, PC units, UDL Variators and AC Motors, G3 helical gear motor.
Products are widely used for applications such as: foodstuffs, ceramics, packing, chemicals, pharmacy, plastics, paper-making, construction machinery, metallurgic mine, environmental protection engineering, and all kinds of automatic lines, and assembly lines.
With fast delivery, superior after-sales service, advanced producing facility, our products sell well both at home and abroad. We have exported our reducers to Southeast Asia, Eastern Europe and Middle East and so on.Our aim is to develop and innovate on basis of high quality, and create a good reputation for reducers.

Packing information:Plastic Bags+Cartons+Wooden Cases , or on request
We participate Germany Hannver Exhibition-ZheJiang PTC Fair-Turkey Win Eurasia

Logistics

After Sales Service

1.Maintenance Time and Warranty:Within 1 year after receiving goods.
2.Other Service: Including modeling selection guide, installation guide, and problem resolution guide, etc.

FAQ

1.Q:Can you make as per customer drawing?
A: Yes, we offer customized service for customers accordingly. We can use customer’s nameplate for gearboxes.
2.Q:What is your terms of payment ?
   A: 30% deposit before production,balance T/T before delivery.
3.Q:Are you a trading company or manufacturer?
   A:We are a manufacurer with advanced equipment and experienced workers.
4.Q:What’s your production capacity?
   A:8000-9000 PCS/MONTH
5.Q:Free sample is available or not?
   A:Yes, we can supply free sample if customer agree to pay for the courier cost
6.Q:Do you have any certificate?
   A:Yes, we have CE certificate and SGS certificate report.

Contact information:
Ms Lingel Pan
For any questions just feel free ton contact me. Many thanks for your kind attention to our company!

Application:	Motor, Machinery, Marine, Agricultural Machinery, Industry
Function:	Distribution Power, Change Drive Torque, Speed Changing, Speed Reduction
Layout:	Right Angle
Hardness:	Hardened Tooth Surface
Installation:	Horizontal Type
Step:	Double-Step

Samples:	US$ 12/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

Common Problems and Troubleshooting for Worm Gearboxes

Worm gearboxes, like any mechanical component, can experience various issues over time. Here are some common problems that may arise and possible troubleshooting steps:

Overheating: Overheating can occur due to factors such as inadequate lubrication, excessive loads, or high operating temperatures. Check lubrication levels, ensure proper ventilation, and reduce loads if necessary.
Noise and Vibration: Excessive noise and vibration may result from misalignment, worn gears, or improper meshing. Check for misalignment, inspect gear teeth for wear, and ensure proper gear meshing.
Leakage: Oil leakage can be caused by damaged seals or gaskets. Inspect seals and gaskets, and replace them if necessary.
Reduced Efficiency: Efficiency loss can occur due to friction, wear, or misalignment. Regularly monitor gearbox performance, ensure proper lubrication, and address any wear or misalignment issues.
Backlash: Excessive backlash can affect precision and accuracy. Adjust gear meshing and reduce backlash to improve performance.
Seizure or Binding: Seizure or binding can result from inadequate lubrication, debris, or misalignment. Clean the gearbox, ensure proper lubrication, and address misalignment issues.
Worn Gears: Worn gear teeth can lead to poor performance. Regularly inspect gears for signs of wear, and replace worn gears as needed.
Seal Wear: Seals can wear over time, leading to leakage and contamination. Inspect seals regularly and replace them if necessary.

If you encounter any of these problems, it’s important to address them promptly to prevent further damage and maintain the performance of your worm gearbox. Regular maintenance, proper lubrication, and addressing issues early can help extend the lifespan and reliability of the gearbox.

worm gearbox

Energy Efficiency of a Worm Gearbox: What to Expect

The energy efficiency of a worm gearbox is an important factor to consider when evaluating its performance. Here’s what you can expect in terms of energy efficiency:

Typical Efficiency Range: Worm gearboxes are known for their compact size and high gear reduction capabilities, but they can exhibit lower energy efficiency compared to other types of gearboxes. The efficiency of a worm gearbox typically falls in the range of 50% to 90%, depending on various factors such as design, manufacturing quality, lubrication, and load conditions.
Inherent Losses: Worm gearboxes inherently involve sliding contact between the worm and worm wheel. This sliding contact generates friction, leading to energy losses in the form of heat. The sliding action also contributes to lower efficiency when compared to gearboxes with rolling contact.
Helical-Worm Design: Some manufacturers offer helical-worm gearbox designs that combine elements of helical and worm gearing. These designs aim to improve efficiency by incorporating helical gears in the reduction stage, which can lead to higher efficiency compared to traditional worm gearboxes.
Lubrication: Proper lubrication plays a significant role in minimizing friction and improving energy efficiency. Using high-quality lubricants and ensuring the gearbox is adequately lubricated can help reduce losses due to friction.
Application Considerations: While worm gearboxes might have lower energy efficiency compared to other types of gearboxes, they still offer advantages in terms of compactness, high torque transmission, and simplicity. Therefore, the decision to use a worm gearbox should consider the specific requirements of the application, including the trade-off between energy efficiency and other performance factors.

When selecting a worm gearbox, it’s essential to consider the trade-offs between energy efficiency, torque transmission, gearbox size, and the specific needs of the application. Regular maintenance, proper lubrication, and selecting a well-designed gearbox can contribute to achieving the best possible energy efficiency within the limitations of worm gearbox technology.

worm gearbox

What is a Worm Gearbox and How Does It Work?

A worm gearbox, also known as a worm gear reducer, is a mechanical device used to transmit rotational motion and torque between non-parallel shafts. It consists of a worm screw and a worm wheel, both of which have helical teeth. The worm screw resembles a threaded cylinder, while the worm wheel is a gear with teeth that mesh with the worm screw.

The working principle of a worm gearbox involves the interaction between the worm screw and the worm wheel. When the worm screw is rotated, its helical teeth engage with the teeth of the worm wheel. As the worm screw rotates, it translates the rotational motion into a perpendicular motion, causing the worm wheel to rotate. This perpendicular motion allows the worm gearbox to achieve a high gear reduction ratio, making it suitable for applications that require significant speed reduction.

One of the key features of a worm gearbox is its ability to provide a high gear reduction ratio in a compact design. However, due to the sliding nature of the meshing teeth, worm gearboxes may exhibit higher friction and lower efficiency compared to other types of gearboxes. Therefore, they are often used in applications where efficiency is not the primary concern but where high torque and speed reduction are essential, such as conveyor systems, elevators, automotive steering systems, and certain industrial machinery.

China high quality Durable Nmrv Worm Gearbox with Electric Motor for Transmission Device components of gearbox
editor by CX 2023-10-18

China high quality Nmrv Worm Gearbox for Logistics Industry manufacturer

Product Description

Brief introduction to RV series worm gear speed reducer
SMRV series worm-gear speed reducer is a new-generation of products developed by our company with combination of advanced technology
both at home and abroad. lt features in:
1.Auminium alloy die-cast casing for RV571, NMRV030,NMRV040,NMRV050,NMRV063,NMRV075,NMRV090, light weight and non-rusting;
cast iron casing for NMRV110,NMRV130,NMRV150
2. Large output torque.
3. Stable transmission with lower noise.
4. High heat-radiating efficiency.
5. Elegant shape, small volume and durable serving life.
6. Suitable for omnibearing installation.
Features
1.Wide transmission rate, strong output torque
2.Compact mechanical structure, light weight, small volume&Good heat-dissipating
3.Smooth operation with lower noise or vibration
4.Easy mounting, free linking, high efficiency
5. PERFECT SUBSTITUDE FOR MOTOVARIO AND CHINAMFG PRODUCTS
Applications
Wide range of application,including light industry of food &beverage, Cement,
package,construction material,chemicals and etc.
Technical data

Model	RV 130 150
Single unit versions	NMRV – fitted for motor flanged coupling, NRV – with input shaft, NMRV-E motor flanged coupling with worm extension shaft, NRV-E with double extension worm shaft,
Power	0.06—-15KW
Single unit reduction ratio	1:5 7.5 80 100
Output torque	2.6—1195N.M
Worm shaft material	20CrMnTi with carburizing and quenching.The hardness of surface is 56-62HRC with carbonized layer 0.5-0.8mm
Worm wheel material	worm mandrel is HT250,and worm ring gear,ZQSn10-1,hardness is 60HRC

After-sale service
One year warranty,subject to proper operation and installation;free technical support all the time.

Application:	Motor
Layout:	Cycloidal
Hardness:	Hardened

Samples:	US$ 24.6/Piece 1 Piece(Min.Order) \| Order Sample

Customization:	Available \| Customized Request

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Shipping Cost: Estimated freight per unit.	about shipping cost and estimated delivery time.

Payment Method:
	Initial Payment Full Payment

Currency:	US$

Return&refunds:	You can apply for a refund up to 30 days after receipt of the products.

worm gearbox

Can a Worm Gearbox be Used for High-Speed Applications?

Worm gearboxes are generally not recommended for high-speed applications due to their inherent design characteristics. Here’s why:

Efficiency: Worm gearboxes tend to have lower efficiency compared to other gearbox types, which means they can generate more heat and experience more energy loss at high speeds.
Heat Generation: The sliding contact between the worm and worm wheel in a worm gearbox can lead to significant friction and heat generation, especially at high speeds. This heat can cause thermal expansion, affecting the gearbox’s performance and longevity.
Wear and Noise: High speeds can exacerbate wear and noise issues in worm gearboxes. Increased friction and wear can lead to faster degradation of components, resulting in reduced lifespan and increased maintenance needs.
Backlash: Worm gearboxes may have higher backlash compared to other gearbox types, which can impact precision and accuracy in high-speed applications.

While worm gearboxes are more commonly used in applications requiring high torque and moderate speeds, they may not be the best choice for high-speed scenarios. If high-speed operation is a requirement, other gearbox types such as helical, spur, or planetary gearboxes are often better suited due to their higher efficiency, lower heat generation, and reduced wear at elevated speeds.

worm gearbox

Energy Efficiency of a Worm Gearbox: What to Expect

The energy efficiency of a worm gearbox is an important factor to consider when evaluating its performance. Here’s what you can expect in terms of energy efficiency:

Typical Efficiency Range: Worm gearboxes are known for their compact size and high gear reduction capabilities, but they can exhibit lower energy efficiency compared to other types of gearboxes. The efficiency of a worm gearbox typically falls in the range of 50% to 90%, depending on various factors such as design, manufacturing quality, lubrication, and load conditions.
Inherent Losses: Worm gearboxes inherently involve sliding contact between the worm and worm wheel. This sliding contact generates friction, leading to energy losses in the form of heat. The sliding action also contributes to lower efficiency when compared to gearboxes with rolling contact.
Helical-Worm Design: Some manufacturers offer helical-worm gearbox designs that combine elements of helical and worm gearing. These designs aim to improve efficiency by incorporating helical gears in the reduction stage, which can lead to higher efficiency compared to traditional worm gearboxes.
Lubrication: Proper lubrication plays a significant role in minimizing friction and improving energy efficiency. Using high-quality lubricants and ensuring the gearbox is adequately lubricated can help reduce losses due to friction.
Application Considerations: While worm gearboxes might have lower energy efficiency compared to other types of gearboxes, they still offer advantages in terms of compactness, high torque transmission, and simplicity. Therefore, the decision to use a worm gearbox should consider the specific requirements of the application, including the trade-off between energy efficiency and other performance factors.

worm gearbox

How to Select the Right Worm Gearbox for Your Application

Selecting the right worm gearbox for your application involves careful consideration of various factors:

Load Requirements: Determine the torque and load requirements of your application to ensure the selected gearbox can handle the load without compromising performance.
Speed Reduction: Calculate the required gear reduction ratio to achieve the desired output speed. Worm gearboxes are known for high reduction ratios.
Efficiency: Consider the gearbox’s efficiency, as worm gearboxes typically have lower efficiency due to the sliding action. Evaluate whether the efficiency meets your application’s needs.
Space Constraints: Assess the available space for the gearbox. Worm gearboxes have a compact design, making them suitable for applications with limited space.
Mounting Options: Determine the mounting orientation and configuration that best suits your application.
Operating Environment: Consider factors such as temperature, humidity, and exposure to contaminants. Choose a gearbox with appropriate seals and materials to withstand the environment.
Backlash: Evaluate the acceptable level of backlash in your application. Worm gearboxes may exhibit more backlash compared to other gear types.
Self-Locking: If self-locking capability is required, confirm that the selected gearbox can prevent reverse motion without the need for external braking mechanisms.
Maintenance: Consider the maintenance requirements of the gearbox. Some worm gearboxes require periodic lubrication and maintenance to ensure proper functioning.
Cost: Balance the features and performance of the gearbox with the overall cost to ensure it aligns with your budget.

Consult with gearbox manufacturers or experts to get recommendations tailored to your specific application. Testing and simulations can also help validate the suitability of a particular gearbox for your needs.

China high quality Nmrv Worm Gearbox for Logistics Industry manufacturer
editor by CX 2023-10-17

China Custom Silver/Blue Nmrv 110 Worm Gearbox with Nice Appearance differential gearbox

Product Description

item	value
Warranty	1 year
Applicable Industries	Manufacturing Plant, Construction works , Energy & Mining, Other
Customized support	OEM
Gearing Arrangement	Worm
Output Torque	242~767Nm
Place of Origin	ZheJiang , China
Input speed	1400RPM
Output speed	14~186.7rpm
Ratio	7.5,10,15,20,25,30,40,50,60,80,100
Material	Aluminium Alloy
Product name	NMRV 110 Worm Gearbox Reducer
MOQ	10pcs
Color	Customization

PRODUCTS CHARACTERISTICS
1. Mad of high-quality aluminum alloy,light weight and non-rusting
2. Large output torque
3. Smooth in running and low in noise,can work long time in dreadful conditions.
4. High in radiating efficiency.
5. Good-looking in appearance,durable in service life and small in volume.
6. Suitable for omnibearing installation.

FAQ
Q1:Are you a manufacturer or trading company?
Yes, We are a leading manufacturer specialized in production of various kinds of small and medium-sized
motor.

Q2:How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.

Q3:What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor information etc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.

Q4:What industries are your gearboxes being used?
Our gearboxes are widely used in the areas of textile, food processing, beverage, chemical industry, escalator,automatic storage equipment, metallurgy, tabacco, environmental protection, logistics and etc.

Q5:How about your delivery time?
For micro brush dc gear motor, the sample delivery time is 2-5 days, bulk delivery time is about 15-20 days, depends on the order qty. For brushless dc motor, the sample deliver time is about 10-15 days; bulk time is 15-20 days.Please take the sales confirmation for final reference.

Q6:What’s your warranty terms?
One year

Application:	Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, Car
Function:	Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout:	as for Request
Hardness:	Hardened Tooth Surface
Installation:	as for Request
Step:	as for Request

Samples:	US$ 44/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

Calculating Gear Ratio in a Worm Reducer

The gear ratio in a worm reducer is determined by the number of teeth on the worm wheel (also known as the worm gear) and the number of threads on the worm shaft. The gear ratio formula for a worm reducer is:

Gear Ratio = Number of Teeth on Worm Wheel / Number of Threads on Worm Shaft

For example, if the worm wheel has 60 teeth and the worm shaft has a single thread, the gear ratio would be 60:1.

It’s important to note that worm reducers have an inherent self-locking property due to the angle of the worm threads. As a result, the gear ratio also affects the mechanical advantage and the system’s ability to resist backdriving.

When calculating the gear ratio, ensure that the worm reducer is properly designed and that the gear ratio aligns with the desired mechanical characteristics for your application. Additionally, consider factors such as efficiency, load capacity, and speed limitations when selecting a gear ratio for a worm reducer.

worm gearbox

Materials Used for Worm Gears

Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:

Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.

The choice of material depends on factors such as the application’s load, speed, operating environment, and required performance characteristics. It’s important to consider these factors when selecting the appropriate material for worm gears to ensure optimal performance and longevity.

worm gearbox

How Does a Worm Gearbox Compare to Other Types of Gearboxes?

Worm gearboxes offer unique advantages and characteristics that set them apart from other types of gearboxes. Here’s a comparison between worm gearboxes and some other common types:

Helical Gearbox: Worm gearboxes have higher torque multiplication, making them suitable for heavy-load applications, while helical gearboxes are more efficient and offer smoother operation.
Bevel Gearbox: Worm gearboxes are compact and can transmit motion at right angles, similar to bevel gearboxes, but worm gearboxes have self-locking capabilities.
Planetary Gearbox: Worm gearboxes provide high torque output and are cost-effective for applications with high reduction ratios, whereas planetary gearboxes offer higher efficiency and can handle higher input speeds.
Spur Gearbox: Worm gearboxes have better shock load resistance due to their sliding motion, while spur gearboxes are more efficient and suitable for lower torque applications.
Cycloidal Gearbox: Cycloidal gearboxes have high shock load capacity and compact design, but worm gearboxes are more cost-effective and can handle higher reduction ratios.

China Custom Silver/Blue Nmrv 110 Worm Gearbox with Nice Appearance differential gearbox
editor by CX 2023-10-17

China Hot selling Nmrv Worm Gearbox for Food & Beverages Industry gearbox engine

Product Description

Technical Features

The high degree of modularity is a design feature of SRC helical gearboxes range. It can be connected respectively with motors such as normal motor, brake motor, explosion-proof motor, frequency conversion motor, servo motor, IEC motor and so on. This kind of product is widely used in drive fields such as textile, foodstuff, ceramics packing, logistics, plastics and so on. It is possible to set up the version required using flanges or feet.

Products characteristics

SRC series helical gear units has more than 4 types. Power 0.12-4kw; Ratio 3.66-54; Torque max 120-500Nm. It can be connected (foot or flange) discretionary and use multi-mounting positions according to customers requirements.

Ground-hardened helical gears;

Modularity,can be combined in many forms;

Aluminium casing, light weight;

Gears in carbonize hard, durable;

Universal mounting;

Refined design,space effective and low noise

Structure feature

Model illuminate

1	Code for gear units series
2	No F code means foot mounted.With F code B5 flange mounted.With Z code B14 flange mounted
3	Specification code of gear units 01
4	I,II,III,B5 Output flange specification,default I not to write out is ok
5	IEC: Input flange HS: shaft input
6	Transmission ratio of gear units
7	M1:Mounting position, default mounting position M1 not to write out is ok
8	Position diagram for motor terminal box,default position o°(R) not to write out is ok
9	No mark means without motor Model motor(poles of power)
10	Voltage – frequency
11	Coil in position for motor, default position S not to write out is ok

4.2 Rotation speed n

n1 Gear units input speed

n2 Gear units output speed

If driven by the external gearing,1400r/min or lower rotation speed is suggested so as to optimize the working conditions and prolong the service life.Higher input rotation speed is permitted, but in this situation,the rated torque M2 will be reduced

4.5 Service factor fs

The effect of the driven machine on the gear unit is taken into account to a sufficient level of accuracy using the service factor fs. The service factor is determined according to the daily operation time and the starting frequency Z. Three load classifications are considered depending on the mass acceleration factor. You can read off the service factor applicable to your application in following figure. The service factor selected using this diagram must be less than or equal to the service factor as given in the performance parameter table.

* starting frequency Z: The cycles include all starting and braking procedures as well as change overs from low to high speed

SRC02..(HS) Performance parameter

Output speed

Torque

Speed ratio

Model

IEC

0.37

16.7rpm

204N.M

1.0

SRC02

80B5/B14

Helical gearbox outline dimension heet

Foot Code	U	V	V1	V2	V3	W	X	X1	Y	Z
B02	18	107.5	60	–	130	11	136	155	100	17
M02	25	85	–	110	120	9	112	145	80	15
M01	18	80	–	110	120	9	118	145	80	15
B01	18	87	50	110	–	9	118	130	90	15

SRC helical gearbox with motor mounting position and terminal box orientation

Package
1 pc / carton,several cartons / wooden pallet

Application:	Motor
Layout:	Cycloidal
Hardness:	Soft Tooth Surface
Installation:	Vertical Type
Step:	Stepless
Type:	Worm Gear Box

Customization:	Available \| Customized Request

worm gearbox

Common Problems and Troubleshooting for Worm Gearboxes

Worm gearboxes, like any mechanical component, can experience various issues over time. Here are some common problems that may arise and possible troubleshooting steps:

Overheating: Overheating can occur due to factors such as inadequate lubrication, excessive loads, or high operating temperatures. Check lubrication levels, ensure proper ventilation, and reduce loads if necessary.
Noise and Vibration: Excessive noise and vibration may result from misalignment, worn gears, or improper meshing. Check for misalignment, inspect gear teeth for wear, and ensure proper gear meshing.
Leakage: Oil leakage can be caused by damaged seals or gaskets. Inspect seals and gaskets, and replace them if necessary.
Reduced Efficiency: Efficiency loss can occur due to friction, wear, or misalignment. Regularly monitor gearbox performance, ensure proper lubrication, and address any wear or misalignment issues.
Backlash: Excessive backlash can affect precision and accuracy. Adjust gear meshing and reduce backlash to improve performance.
Seizure or Binding: Seizure or binding can result from inadequate lubrication, debris, or misalignment. Clean the gearbox, ensure proper lubrication, and address misalignment issues.
Worn Gears: Worn gear teeth can lead to poor performance. Regularly inspect gears for signs of wear, and replace worn gears as needed.
Seal Wear: Seals can wear over time, leading to leakage and contamination. Inspect seals regularly and replace them if necessary.

worm gearbox

Worm Gearbox vs. Helical Gearbox: A Comparison

Worm gearboxes and helical gearboxes are two popular types of gear systems, each with its own set of advantages and disadvantages. Let’s compare them:

Aspect	Worm Gearbox	Helical Gearbox
Efficiency	Lower efficiency due to sliding friction between the worm and worm wheel.	Higher efficiency due to rolling contact between helical gear teeth.
Torque Transmission	Excellent torque transmission and high reduction ratios achievable in a single stage.	Good torque transmission, but may require multiple stages for high reduction ratios.
Noise and Vibration	Generally higher noise and vibration levels due to sliding action.	Lower noise and vibration levels due to smoother rolling contact.
Backlash	Higher inherent backlash due to the design.	Lower backlash due to meshing of helical teeth.
Efficiency at Higher Speeds	Less suitable for high-speed applications due to efficiency loss.	More suitable for high-speed applications due to higher efficiency.
Overload Protection	Natural self-locking feature provides some overload protection.	May not have the same level of inherent overload protection.
Applications	Commonly used for applications requiring high reduction ratios, such as conveyor systems and heavy-duty machinery.	Widely used in various applications including automotive transmissions, industrial machinery, and more.

Both worm and helical gearboxes have their place in engineering, and the choice between them depends on the specific requirements of the application. Worm gearboxes are preferred for applications with high reduction ratios, while helical gearboxes are chosen for their higher efficiency and smoother operation.

worm gearbox

How Does a Worm Gearbox Compare to Other Types of Gearboxes?

Worm gearboxes offer unique advantages and characteristics that set them apart from other types of gearboxes. Here’s a comparison between worm gearboxes and some other common types:

Helical Gearbox: Worm gearboxes have higher torque multiplication, making them suitable for heavy-load applications, while helical gearboxes are more efficient and offer smoother operation.
Bevel Gearbox: Worm gearboxes are compact and can transmit motion at right angles, similar to bevel gearboxes, but worm gearboxes have self-locking capabilities.
Planetary Gearbox: Worm gearboxes provide high torque output and are cost-effective for applications with high reduction ratios, whereas planetary gearboxes offer higher efficiency and can handle higher input speeds.
Spur Gearbox: Worm gearboxes have better shock load resistance due to their sliding motion, while spur gearboxes are more efficient and suitable for lower torque applications.
Cycloidal Gearbox: Cycloidal gearboxes have high shock load capacity and compact design, but worm gearboxes are more cost-effective and can handle higher reduction ratios.

China Hot selling Nmrv Worm Gearbox for Food & Beverages Industry gearbox engine
editor by CX 2023-10-16

China high quality Right Angle Nmrv Worm Gearbox with Low Noise for Industial Transmission comer gearbox

Product Description

Detailed Photos

Exploded View:

Product Parameters

Old Model	New Model	Ratio	Center Distance	Power	Input Dia.	Output Dia.	Output Torque	Weight
RV571		7.5~100	25mm	0.06KW~0.12KW	Φ9	Φ11	21N.m	0.7kgs
RV030	RW030	7.5~100	30mm	0.06KW~0.25KW	Φ9(Φ11)	Φ14	45N.m	1.2kgs
RV040	RW040	7.5~100	40mm	0.09KW~0.55KW	Φ9(Φ11,Φ14)	Φ18(Φ19)	84N.m	2.3kgs
RV050	RW050	7.5~100	50mm	0.12KW~1.5KW	Φ11(Φ14,Φ19)	Φ25(Φ24)	160N.m	3.5kgs
RV063	RW063	7.5~100	63mm	0.18KW~2.2KW	Φ14(Φ19,Φ24)	Φ25(Φ28)	230N.m	6.2kgs
RV075	RW075	7.5~100	75mm	0.25KW~4.0KW	Φ14(Φ19,Φ24,Φ28)	Φ28(Φ35)	410N.m	9.0kgs
RV090	RW090	7.5~100	90mm	0.37KW~4.0KW	Φ19(Φ24,Φ28)	Φ35(Φ38)	725N.m	13.0kgs
RV110	RW110	7.5~100	110mm	0.55KW~7.5KW	Φ19(Φ24,Φ28,Φ38)	Φ42	1050N.m	35.0kgs
RV130	RW130	7.5~100	130mm	0.75KW~7.5KW	Φ24(Φ28,Φ38)	Φ45	1550N.m	48.0kgs
RV150	RW150	7.5~100	150mm	2.2KW~15KW	Φ28(Φ38,Φ42)	Φ50		84.0kgs

GMRV Outline Dimension:

GMRV	A	B	C	C1	D(H8)	E(h8)	F	G	G1	H	H1	I	M	N	O	P	Q	R	S	T	BL	β	b	t	V
030	80	97	54	44	14	55	32	56	63	65	29	55	40	57	30	75	44	6.5	21	5.5	M6*10(n=4)	0°	5	16.3	27
040	100	121.5	70	60	18(19)	60	43	71	78	75	36.5	70	50	71.5	40	87	55	6.5	26	6.5	M6*10(n=4)	45°	6	20.8(21.8)	35
050	120	144	80	70	25(24)	70	49	85	92	85	43.5	80	60	84	50	100	64	8.5	30	7	M8*12(n=4)	45°	8	28.3(27.3)	40
063	144	174	100	85	25(28)	80	67	103	112	95	53	95	72	102	63	110	80	8.5	36	8	M8*12(n=8)	45°	8	28.3(31.3)	50
075	172	205	120	90	28(35)	95	72	112	120	115	57	112.5	86	119	75	140	93	11	40	10	M8*14(n=8)	45°	8(10)	31.3(38.3)	60
090	206	238	140	100	35(38)	110	74	130	140	130	67	129.5	103	135	90	160	102	13	45	11	M10*16(n=8)	45°	10	38.3(41.3)	70
110	255	295	170	115	42	130	–	144	155	165	74	160	127.5	167.5	110	200	125	14	50	14	M10*18(n=8)	45°	12	45.3	85
130	293	335	200	120	45	180	–	155	170	215	81	179	146.5	187.5	130	250	140	16	60	15	M12*20(n=8)	45°	14	48.8	100
150	340	400	240	145	50	180	–	185	200	215	96	210	170	230	150	250	180	18	72.5	18	M12*22(n=8)	45°	14	53.8	120

Company Profile

Packing information:Plastic Bags+Cartons+Wooden Cases , or on request
We participate Germany Hannver Exhibition-ZheJiang PTC Fair-Turkey Win Eurasia

Logistics

After Sales Service

1.Maintenance Time and Warranty:Within 1 year after receiving goods.
2.Other Service: Including modeling selection guide, installation guide, and problem resolution guide, etc.

FAQ

Contact information:
Ms Lingel Pan
For any questions just feel free ton contact me. Many thanks for your kind attention to our company!

Application:	Motor, Machinery, Marine, Agricultural Machinery, Industry
Function:	Distribution Power, Change Drive Torque, Speed Changing, Speed Reduction
Layout:	Right Angle
Hardness:	Hardened Tooth Surface
Installation:	Horizontal Type
Step:	Double-Step

Samples:	US$ 10/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

Common Problems and Troubleshooting for Worm Gearboxes

Worm gearboxes, like any mechanical component, can experience various issues over time. Here are some common problems that may arise and possible troubleshooting steps:

Overheating: Overheating can occur due to factors such as inadequate lubrication, excessive loads, or high operating temperatures. Check lubrication levels, ensure proper ventilation, and reduce loads if necessary.
Noise and Vibration: Excessive noise and vibration may result from misalignment, worn gears, or improper meshing. Check for misalignment, inspect gear teeth for wear, and ensure proper gear meshing.
Leakage: Oil leakage can be caused by damaged seals or gaskets. Inspect seals and gaskets, and replace them if necessary.
Reduced Efficiency: Efficiency loss can occur due to friction, wear, or misalignment. Regularly monitor gearbox performance, ensure proper lubrication, and address any wear or misalignment issues.
Backlash: Excessive backlash can affect precision and accuracy. Adjust gear meshing and reduce backlash to improve performance.
Seizure or Binding: Seizure or binding can result from inadequate lubrication, debris, or misalignment. Clean the gearbox, ensure proper lubrication, and address misalignment issues.
Worn Gears: Worn gear teeth can lead to poor performance. Regularly inspect gears for signs of wear, and replace worn gears as needed.
Seal Wear: Seals can wear over time, leading to leakage and contamination. Inspect seals regularly and replace them if necessary.

worm gearbox

Materials Used for Worm Gears

Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:

Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.

worm gearbox

What is a Worm Gearbox and How Does It Work?

China high quality Right Angle Nmrv Worm Gearbox with Low Noise for Industial Transmission comer gearbox
editor by CX 2023-10-16

China Standard Nmrv Worm Reducer Speed Reducer Gear Box gearbox definition

Product Description

Model No	NMRV571, NMRV030, NMRV040, NMRV050, NMRV063, NMRV075, NMRV090, NMRV110, NMRV130, NMRV150
Ratio	5,7.5,10,15,20,25,30,40,50,60,80,100
Type	Worm Gear Speed Reducer / Gearbox / Reductor
Color	Customized Color
Packing	Carton, Honey Comb Carton, Wooden Case with Wooden Pallet
Usage	Industrial Machine, Food Stuff, Ceramics, Chemical, Packing, Dyeing, Wood Working, Glass, etc.
Flange	IEC standard flange or customized dimensions
Housing Material	Aluminum&Cast iron
Size	11 sizes(WMRV25~WMRV185)
Power	0.06~22 KW
Nominal torque	≤2548 N.m
Ratio	5~100

FAQ
Q1:Are you a manufacturer or trading company?
Yes, We are a leading manufacturer specialized in production of various kinds of small and medium-sized
motor.

Q6:What’s your warranty terms?
One year

Application:	Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, Car
Function:	Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout:	as for Request
Hardness:	Hardened Tooth Surface
Installation:	as for Request
Step:	as for Request

Samples:	US$ 25/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

What are the Noise Levels Associated with Worm Gearboxes?

The noise levels associated with worm gearboxes can vary depending on several factors, including the design, quality, operating conditions, and maintenance of the gearbox. Here are some key points to consider:

Design and Quality: Well-designed and high-quality worm gearboxes tend to produce lower noise levels. Factors such as gear tooth profile, precision manufacturing, and proper alignment can contribute to reduced noise.
Gear Engagement: The way the worm and worm wheel engage and mesh with each other can impact noise levels. Proper tooth contact and alignment can help minimize noise during operation.
Lubrication: Inadequate or improper lubrication can lead to increased friction and wear, resulting in higher noise levels. Using the recommended lubricant and maintaining proper lubrication levels are important for noise reduction.
Operating Conditions: Operating the gearbox within its specified load and speed limits can help prevent excessive noise generation. Overloading or operating at high speeds beyond the gearbox’s capabilities can lead to increased noise.
Backlash: Excessive backlash or play between the gear teeth can lead to impact noise as the teeth engage. Proper backlash adjustment can help mitigate this issue.
Maintenance: Regular maintenance, including gear inspection, lubrication checks, and addressing any wear or damage, can help keep noise levels in check.

It’s important to note that while worm gearboxes can produce some noise due to the nature of gear meshing, proper design, maintenance, and operation can significantly reduce noise levels. If noise is a concern for your application, consulting with gearbox manufacturers and experts can provide insights into selecting the right gearbox type and implementing measures to minimize noise.

worm gearbox

How to Calculate the Input and Output Speeds of a Worm Gearbox?

Calculating the input and output speeds of a worm gearbox involves understanding the gear ratio and the principles of gear reduction. Here’s how you can calculate these speeds:

Input Speed: The input speed (N₁) is the speed of the driving gear, which is the worm gear in this case. It is usually provided by the manufacturer or can be measured directly.
Output Speed: The output speed (N₂) is the speed of the driven gear, which is the worm wheel. To calculate the output speed, use the formula:
N₂ = N₁ / (Z₁ * i)

Where:
N₂ = Output speed (rpm)
N₁ = Input speed (rpm)
Z₁ = Number of teeth on the worm gear
i = Gear ratio (ratio of the number of teeth on the worm gear to the number of threads on the worm)

It’s important to note that worm gearboxes are designed for gear reduction, which means that the output speed is lower than the input speed. Additionally, the efficiency of the gearbox, friction, and other factors can affect the actual output speed. Calculating the input and output speeds is crucial for understanding the performance and capabilities of the worm gearbox in a specific application.

worm gearbox

Can a Worm Gearbox Provide High Torque Output?

Yes, a worm gearbox is capable of providing high torque output due to its unique design and principle of operation. Worm gears are known for their high torque multiplication capabilities, making them suitable for applications that require significant torque transfer.

The torque output of a worm gearbox is influenced by several factors:

Lead Angle: The lead angle of the worm affects the mechanical advantage of the gear system. A larger lead angle can result in higher torque output.
Worm Diameter: A larger diameter worm can offer increased torque output as it provides more contact area with the gear.
Gear Ratio: The gear ratio between the worm and the gear determines the torque multiplication factor. A higher gear ratio leads to higher torque output.
Lubrication: Proper lubrication is essential to minimize friction and ensure efficient torque transmission.
Material and Quality: High-quality materials and precision manufacturing contribute to the gearbox’s ability to handle high torque loads.

Due to their ability to provide high torque output in a compact form factor, worm gearboxes are commonly used in various industrial applications, including heavy machinery, construction equipment, conveyor systems, and more.

China Standard Nmrv Worm Reducer Speed Reducer Gear Box gearbox definition
editor by CX 2023-10-09

China high quality Nmrv Series Worm Gearbox with Speed Variator with Hot selling

Product Description

RV series Characteristics

RV – Sizes:–150
Input Options: with input shaft, With Square flange,With Input Flange
Input Power 0.06 to 11 kW
RV-Size from 030 to 105 in die-cast aluminium alloy budy and over 110 in cast iron
Ratios between 5 and 100
Max torque 1550 N.m and admissible output radial loads max 8771 N
Aluminium units are supplied complete with synthetic oil and allow for universal mounting positions, with no need to modify lubricant quantity
Worm wheel: Copper (KK Cu).
Loading capacity in accordance with: ISO 9001:2015/GB/T 19001-2016
Size 030 and over are painted with RAL 5571 blue
Worm gear reducers are available with diffferent combinations: NMRV+NMRV, NMRVpower+NMRV, JWB+NMRV
NMRV, NRV+VS,NMRV+AS,NMRV+VS,NMRV+F
Options: torque arm, output flange, viton oil seals, low/high temperature oil, filling/drain/breather/level plug,Small gap

Basic models can be applied to a wide range of power reduction ratios from 5 to 1000.
Warranty: One year from date of delivery.

WORM GEARBOX
SNW SERIES				Output Speed Range:
Type	Old Type	Output Torque	Output Shaft Dia.	14rpm-280rpm
SNW030	RV030	21N.m	φ14	Applicable Motor Power:
SNW040	RV040	45N.m	φ19	0.06kW-11kW
SNW050	RV050	84N.m	φ25	Input Options1:
SNW063	RV063	160N.m	φ25	With Inline AC Motor
SNW075	RV075	230N.m	φ28	Input Options2:
SNW090	RV090	410N.m	φ35	With Square flange
SNW105	RV105	630N.m	φ42	Input Options3:
SNW110	RV110	725N.m	φ42	With Input Shaft
SNW130	RV130	1050N.m	φ45	Input Options4:
SNW150	RV150	1550N.m	φ50	With Input Flange

Starshine Drive

ZheJiang CHINAMFG Drive Co.,Ltd,the predecessor was a state-owned military mould enterprise, was established in 1965. CHINAMFG specializes in the complete power transmission solution for high-end equipment manufacturing industries based on the aim of “Platform Product, Application Design and Professional Service”.
Starshine have a strong technical force with over 350 employees at present, including over 30 engineering technicians, 30 quality inspectors, covering an area of 80000 square CHINAMFG and kinds of advanced processing machines and testing equipments. We have a good foundation for the industry application development and service of high-end speed reducers & variators owning to the provincial engineering technology research center,the lab of gear speed reducers, and the base of modern R&D.

Our Team

Quality Control
Quality:Insist on Improvement,Strive for Excellence With the development of equipment manufacturing indurstry,customer never satirsfy with the current quality of our products,on the contrary,wcreate the value of quality.
Quality policy:to enhance the overall level in the field of power transmission
Quality View:Continuous Improvement , pursuit of excellence
Quality Philosophy:Quality creates value

3. Incoming Quality Control
To establish the AQL acceptable level of incoming material control, to provide the material for the whole inspection, sampling, immunity. On the acceptance of qualified products to warehousing, substandard goods to take return, check, rework, rework inspection; responsible for tracking bad, to monitor the supplier to take corrective measures
to prevent recurrence.

4. Process Quality Control
The manufacturing site of the first examination, inspection and final inspection, sampling according to the requirements of some projects, judging the quality change trend;
found abnormal phenomenon of manufacturing, and supervise the production department to improve, eliminate the abnormal phenomenon or state.

5. FQC(Final QC)
After the manufacturing department will complete the product, stand in the customer’s position on the finished product quality verification, in order to ensure the quality of
customer expectations and needs.

6. OQC(Outgoing QC)
After the product sample inspection to determine the qualified, allowing storage, but when the finished product from the warehouse before the formal delivery of the goods, there is a check, this is called the shipment inspection.Check content:In the warehouse storage and transfer status to confirm, while confirming the delivery of the product
is a product inspection to determine the qualified products.

Packing

Delivery

Application:	Motor, Machinery, Agricultural Machinery
Function:	Speed Changing, Speed Reduction
Layout:	Worm and Worm Wheel
Hardness:	Hardened Tooth Surface
Installation:	Vertical Type
Step:	Single-Step

Customization:	Available \| Customized Request

worm gearbox

Is it Possible to Reverse the Direction of a Worm Gearbox?

Efficiency: Reversing the direction of a worm gearbox can potentially affect its efficiency. Worm gearboxes are typically more efficient in one direction of rotation due to the design of the worm and worm wheel.
Backlash: Reversing the direction of rotation might lead to increased backlash or play in the gearbox, which can impact precision and smooth operation.
Lubrication: Depending on the gearbox’s design, reversing the direction could affect lubrication distribution and lead to uneven wear on the gear teeth.
Load: Reversing the direction might also impact the gearbox’s load-carrying capacity, especially if it’s designed for predominantly one-way operation.
Noise and Vibration: Direction reversal can sometimes result in increased noise and vibration due to changes in gear engagement and meshing behavior.

worm gearbox

How to Calculate the Efficiency of a Worm Gearbox

Calculating the efficiency of a worm gearbox involves determining the ratio of output power to input power. Efficiency is a measure of how well the gearbox converts input power into useful output power without losses. Here’s how to calculate it:

Step 1: Measure Input Power: Measure the input power (Pin) using a power meter or other suitable measuring equipment.
Step 2: Measure Output Power: Measure the output power (Pout) that the gearbox is delivering to the load.
Step 3: Calculate Efficiency: Calculate the efficiency (η) using the formula: Efficiency (η) = (Output Power / Input Power) * 100%

For example, if the input power is 1000 watts and the output power is 850 watts, the efficiency would be (850 / 1000) * 100% = 85%.

It’s important to note that efficiencies can vary based on factors such as gear design, lubrication, wear, and load conditions. The calculated efficiency provides insight into how effectively the gearbox is converting power, but it’s always a good practice to refer to manufacturer specifications for gearbox efficiency ratings.

worm gearbox

Advantages of Using a Worm Reducer in Mechanical Systems

Worm reducers offer several advantages that make them suitable for various mechanical systems:

High Gear Reduction Ratio: Worm gearboxes provide significant speed reduction, making them ideal for applications that require a high gear reduction ratio without the need for multiple gears.
Compact Design: Worm reducers have a compact and space-saving design, allowing them to be used in applications with limited space.
Self-Locking: Worm gearboxes exhibit self-locking properties, which means that the worm screw can prevent the worm wheel from reversing its motion. This is beneficial for applications where the gearbox needs to hold a load in place without external braking mechanisms.
Smooth and Quiet Operation: Worm gearboxes operate with a sliding motion between the teeth, resulting in smoother and quieter operation compared to some other types of gearboxes.
High Torque Transmission: Worm gearboxes can transmit high torque levels, making them suitable for applications that require powerful torque output.
Heat Dissipation: The sliding action between the worm screw and the worm wheel contributes to heat dissipation, which can be advantageous in applications that generate heat during operation.
Stable Performance: Worm reducers offer stable and reliable performance, making them suitable for continuous operation in various industrial and mechanical systems.

Despite these advantages, it’s important to note that worm gearboxes also have limitations, such as lower efficiency compared to other gear types due to the sliding motion and potential for higher heat generation. Therefore, selecting the appropriate type of gearbox depends on the specific requirements and constraints of the application.

China high quality Nmrv Series Worm Gearbox with Speed Variator with Hot selling
editor by CX 2023-09-28

China high quality New Nmrv Series Worm Drive Transmission Gearbox sequential gearbox

Product Description

Detailed Photos

Exploded View:

Product Parameters

Old Model	New Model	Ratio	Center Distance	Power	Input Dia.	Output Dia.	Output Torque	Weight
RV571		7.5~100	25mm	0.06KW~0.12KW	Φ9	Φ11	21N.m	0.7kgs
RV030	RW030	7.5~100	30mm	0.06KW~0.25KW	Φ9(Φ11)	Φ14	45N.m	1.2kgs
RV040	RW040	7.5~100	40mm	0.09KW~0.55KW	Φ9(Φ11,Φ14)	Φ18(Φ19)	84N.m	2.3kgs
RV050	RW050	7.5~100	50mm	0.12KW~1.5KW	Φ11(Φ14,Φ19)	Φ25(Φ24)	160N.m	3.5kgs
RV063	RW063	7.5~100	63mm	0.18KW~2.2KW	Φ14(Φ19,Φ24)	Φ25(Φ28)	230N.m	6.2kgs
RV075	RW075	7.5~100	75mm	0.25KW~4.0KW	Φ14(Φ19,Φ24,Φ28)	Φ28(Φ35)	410N.m	9.0kgs
RV090	RW090	7.5~100	90mm	0.37KW~4.0KW	Φ19(Φ24,Φ28)	Φ35(Φ38)	725N.m	13.0kgs
RV110	RW110	7.5~100	110mm	0.55KW~7.5KW	Φ19(Φ24,Φ28,Φ38)	Φ42	1050N.m	35.0kgs
RV130	RW130	7.5~100	130mm	0.75KW~7.5KW	Φ24(Φ28,Φ38)	Φ45	1550N.m	48.0kgs
RV150	RW150	7.5~100	150mm	2.2KW~15KW	Φ28(Φ38,Φ42)	Φ50		84.0kgs

GMRV Outline Dimension:

GMRV	A	B	C	C1	D(H8)	E(h8)	F	G	G1	H	H1	I	M	N	O	P	Q	R	S	T	BL	β	b	t	V
030	80	97	54	44	14	55	32	56	63	65	29	55	40	57	30	75	44	6.5	21	5.5	M6*10(n=4)	0°	5	16.3	27
040	100	121.5	70	60	18(19)	60	43	71	78	75	36.5	70	50	71.5	40	87	55	6.5	26	6.5	M6*10(n=4)	45°	6	20.8(21.8)	35
050	120	144	80	70	25(24)	70	49	85	92	85	43.5	80	60	84	50	100	64	8.5	30	7	M8*12(n=4)	45°	8	28.3(27.3)	40
063	144	174	100	85	25(28)	80	67	103	112	95	53	95	72	102	63	110	80	8.5	36	8	M8*12(n=8)	45°	8	28.3(31.3)	50
075	172	205	120	90	28(35)	95	72	112	120	115	57	112.5	86	119	75	140	93	11	40	10	M8*14(n=8)	45°	8(10)	31.3(38.3)	60
090	206	238	140	100	35(38)	110	74	130	140	130	67	129.5	103	135	90	160	102	13	45	11	M10*16(n=8)	45°	10	38.3(41.3)	70
110	255	295	170	115	42	130	–	144	155	165	74	160	127.5	167.5	110	200	125	14	50	14	M10*18(n=8)	45°	12	45.3	85
130	293	335	200	120	45	180	–	155	170	215	81	179	146.5	187.5	130	250	140	16	60	15	M12*20(n=8)	45°	14	48.8	100
150	340	400	240	145	50	180	–	185	200	215	96	210	170	230	150	250	180	18	72.5	18	M12*22(n=8)	45°	14	53.8	120

Company Profile

Packing information:Plastic Bags+Cartons+Wooden Cases , or on request
We participate Germany Hannver Exhibition-ZheJiang PTC Fair-Turkey Win Eurasia

Logistics

After Sales Service

1.Maintenance Time and Warranty:Within 1 year after receiving goods.
2.Other Service: Including modeling selection guide, installation guide, and problem resolution guide, etc.

FAQ

Contact information:
Ms Lingel Pan
For any questions just feel free ton contact me. Many thanks for your kind attention to our company!

Application:	Motor, Machinery, Marine, Agricultural Machinery, Industry
Hardness:	Hardened Tooth Surface
Installation:	Horizontal Type
Layout:	Right Angle
Gear Shape:	Worm Gear
Step:	Double-Step

Samples:	US$ 12/Piece 1 Piece(Min.Order) \| Request Sample

Customization:	Available \| Customized Request

worm gearbox

Can a Worm Gearbox Be Used in Heavy-Duty Machinery?

Yes, a worm gearbox can be used in heavy-duty machinery and is often chosen for such applications due to its inherent characteristics and advantages:

High Torque Transmission: Worm gearboxes are known for their ability to transmit high torque loads, making them suitable for heavy-duty machinery that requires significant power transmission.
Load Distribution: The design of worm gears provides robust load distribution and excellent contact between the worm and worm wheel teeth. This enhances their load-carrying capacity, making them capable of handling heavy loads without premature wear or failure.
Compact Design: Worm gearboxes are compact and offer high reduction ratios in a single stage. This allows for the reduction of high input speeds to lower output speeds, often required in heavy-duty machinery.
Overload Protection: Worm gears have a natural self-locking feature, which means the gear cannot be easily back-driven by external forces. This feature provides inherent overload protection, preventing damage to the gearbox and machinery in cases of sudden load spikes.
Smooth Operation: Worm gearboxes offer smooth and steady operation, which is crucial for heavy-duty machinery where precision and controlled movement are essential.

However, when considering the use of a worm gearbox in heavy-duty applications, it’s important to ensure proper engineering and sizing. The design should account for factors such as load, speed, duty cycle, lubrication, and temperature to ensure optimal performance and longevity.

Overall, worm gearboxes are well-suited for heavy-duty machinery across various industries, including mining, construction, manufacturing, and more.

worm gearbox

How to Calculate the Efficiency of a Worm Gearbox

Step 1: Measure Input Power: Measure the input power (Pin) using a power meter or other suitable measuring equipment.
Step 2: Measure Output Power: Measure the output power (Pout) that the gearbox is delivering to the load.
Step 3: Calculate Efficiency: Calculate the efficiency (η) using the formula: Efficiency (η) = (Output Power / Input Power) * 100%

For example, if the input power is 1000 watts and the output power is 850 watts, the efficiency would be (850 / 1000) * 100% = 85%.

worm gearbox

Advantages of Using a Worm Reducer in Mechanical Systems

Worm reducers offer several advantages that make them suitable for various mechanical systems:

High Gear Reduction Ratio: Worm gearboxes provide significant speed reduction, making them ideal for applications that require a high gear reduction ratio without the need for multiple gears.
Compact Design: Worm reducers have a compact and space-saving design, allowing them to be used in applications with limited space.
Self-Locking: Worm gearboxes exhibit self-locking properties, which means that the worm screw can prevent the worm wheel from reversing its motion. This is beneficial for applications where the gearbox needs to hold a load in place without external braking mechanisms.
Smooth and Quiet Operation: Worm gearboxes operate with a sliding motion between the teeth, resulting in smoother and quieter operation compared to some other types of gearboxes.
High Torque Transmission: Worm gearboxes can transmit high torque levels, making them suitable for applications that require powerful torque output.
Heat Dissipation: The sliding action between the worm screw and the worm wheel contributes to heat dissipation, which can be advantageous in applications that generate heat during operation.
Stable Performance: Worm reducers offer stable and reliable performance, making them suitable for continuous operation in various industrial and mechanical systems.

China high quality New Nmrv Series Worm Drive Transmission Gearbox sequential gearbox
editor by CX 2023-09-25

China high quality Nmrv Series Worm Gear Box with Output Shaft gearbox definition

Product Description

High Rpm RV series Aluminum Alloy Worm Gear box NMRV 571-150 Reducer Variable Wheel Drive Speed Reduction Worm Gearbox

Product Parameters

Editing and broadcasting of main materials

1. Body, die-casting aluminum alloy;

2. Worm shaft, 20 Crq steel, high temperature treatment;

3. Worm gear, nickel bronze alloy;

4. Aluminum alloy body, sandblasting and surface anti-corrosion treatment;

5. Cast iron body, painted with bIu RA5571.

Regular center distance specification editing and broadcasting

Center distance: 130 (unit: mm).

Output hole/shaft diameter: 11, 14, 18, 25, 28, 35, 42, 45 (unit: mm)

Products Description

NMRV worm gearbox reducer is a commodity with sophisticated design and continuous improvements, its main features are made of high quality aluminum alloy, light weight and non-rusting, larget output toque, smooth running and low noise, high radiating efficiency, good looking apprearance, derable service life, small volume and suitable for all mounting positions.

Feature
1. Mad of high-quality aluminum alloy,light weight and non-rusting
2. Large output torque
3. Smooth in running and low in noise,can work long time in dreadful conditions.
4. High in radiating efficiency.
5. Good-looking in appearance,durable in service life and small in volume.
6. Suitable for omnibearing installation.

contact-info.html

Model	NMRV571, NMRV030, NMRV040, NMRV050, NMRV063, NMRV075, NMRV090, NMRV110, NMRV130, NMRV150
Ratio	5,7.5,10,15,20,25,30,40,50,60,80,100
Output Torque	1.8-1760Nm
Application	Machinery Industry
Input Speed	900-2800RPM
Output Speed	10-250RPM
Material	Housing: Size 25-110 Is Aluminum Alloy, Size 110-150 Is Cast-Iron
	Worm Wheel: ZCuSn10Pb1
	Worm:20Cr
	Pinion:Tin Bronze
	Output Shaft: Steel-45#
IEC Flange	IEC Standard Flange Or On Customer Request

Detailed Photos

Exploded View:
About CHINAMFG Transmission:
We are a professional reducer manufacturer located in HangZhou, ZheJiang province.
Our leading products is full range of RV571-150 worm reducers , also supplied GKM hypoid helical gearbox, GRC inline helical gearbox, PC units, UDL Variators and AC Motors, G3 helical gear motor.
Products are widely used for applications such as: foodstuffs, ceramics, packing, chemicals, pharmacy, plastics, paper-making, construction machinery, metallurgic mine, environmental protection engineering, and all kinds of automatic lines, and assembly lines.
With fast delivery, superior after-sales service, advanced producing facility, our products sell well both at home and abroad. We have exported our reducers to Southeast Asia, Eastern Europe and Middle East and so on.Our aim is to develop and innovate on basis of high quality, and create a good reputation for reducers.

Hardness:	Hardened Tooth Surface
Installation:	90 Degree
Layout:	Expansion
Gear Shape:	Bevel Gear
Step:	Single-Step
Type:	Gear Reducer

Samples:	US$ 30/Piece 1 Piece(Min.Order) \| Request Sample

worm gearbox

Can a Worm Gearbox Be Used in Heavy-Duty Machinery?

Yes, a worm gearbox can be used in heavy-duty machinery and is often chosen for such applications due to its inherent characteristics and advantages:

High Torque Transmission: Worm gearboxes are known for their ability to transmit high torque loads, making them suitable for heavy-duty machinery that requires significant power transmission.
Load Distribution: The design of worm gears provides robust load distribution and excellent contact between the worm and worm wheel teeth. This enhances their load-carrying capacity, making them capable of handling heavy loads without premature wear or failure.
Compact Design: Worm gearboxes are compact and offer high reduction ratios in a single stage. This allows for the reduction of high input speeds to lower output speeds, often required in heavy-duty machinery.
Overload Protection: Worm gears have a natural self-locking feature, which means the gear cannot be easily back-driven by external forces. This feature provides inherent overload protection, preventing damage to the gearbox and machinery in cases of sudden load spikes.
Smooth Operation: Worm gearboxes offer smooth and steady operation, which is crucial for heavy-duty machinery where precision and controlled movement are essential.

Overall, worm gearboxes are well-suited for heavy-duty machinery across various industries, including mining, construction, manufacturing, and more.

worm gearbox

How to Calculate the Input and Output Speeds of a Worm Gearbox?

Calculating the input and output speeds of a worm gearbox involves understanding the gear ratio and the principles of gear reduction. Here’s how you can calculate these speeds:

Input Speed: The input speed (N₁) is the speed of the driving gear, which is the worm gear in this case. It is usually provided by the manufacturer or can be measured directly.
Output Speed: The output speed (N₂) is the speed of the driven gear, which is the worm wheel. To calculate the output speed, use the formula:
N₂ = N₁ / (Z₁ * i)

Where:
N₂ = Output speed (rpm)
N₁ = Input speed (rpm)
Z₁ = Number of teeth on the worm gear
i = Gear ratio (ratio of the number of teeth on the worm gear to the number of threads on the worm)

worm gearbox

How Does a Worm Gearbox Compare to Other Types of Gearboxes?

Worm gearboxes offer unique advantages and characteristics that set them apart from other types of gearboxes. Here’s a comparison between worm gearboxes and some other common types:

Helical Gearbox: Worm gearboxes have higher torque multiplication, making them suitable for heavy-load applications, while helical gearboxes are more efficient and offer smoother operation.
Bevel Gearbox: Worm gearboxes are compact and can transmit motion at right angles, similar to bevel gearboxes, but worm gearboxes have self-locking capabilities.
Planetary Gearbox: Worm gearboxes provide high torque output and are cost-effective for applications with high reduction ratios, whereas planetary gearboxes offer higher efficiency and can handle higher input speeds.
Spur Gearbox: Worm gearboxes have better shock load resistance due to their sliding motion, while spur gearboxes are more efficient and suitable for lower torque applications.
Cycloidal Gearbox: Cycloidal gearboxes have high shock load capacity and compact design, but worm gearboxes are more cost-effective and can handle higher reduction ratios.

China high quality Nmrv Series Worm Gear Box with Output Shaft gearbox definition
editor by CX 2023-09-22