Product Description
Product Description
NMRV series worm gear reducer
1. Aluminum alloy housing, small size, light weight.
2. High transmission efficiency, low noise.
3.Smooth ruuning, high output torque and long service life.
4. Multiple connection structure and installation.
| TYPE | Worm Gear Speed Reducer / Worm Gearbox |
| NMRV MODEL | NMRV25, NMRV30, NMRV40, NMRV50, NMRV63, NMRV75, NMRV90, NMRV110, NMRV130, NMRV150 |
| NRV MODEL | NRV25, NRV30, NRV40, NRV50, NRV63, NRV75, NRV90, NRV110, NRV130, NRV150 |
| POWER | 0.12kw-15kw |
| RATIO | 1/7.5,1/10,1/15,1/20,1/15,1/30,1/40,1/50,1/60,1/80,1/100 |
| COLOR | Blue(RAL5571), Silver grey (RAL9571), or on request |
| MATERIAL | Housing/Flange:Aluminum Alloy |
| Worm Gear:Copper 9-4&nodular iron | |
| Worm:20CrMn Ti with carburizing and quenching, surface harness is 56-62HRC | |
| Shaft:chromium steel-45# | |
| IEC FLANGE | IEC standard flange 56B14, 63B14, 63B5, 63B5, 71B14,80B14 AND SO ON |
| LUBRICANT | Synthetic & Mineral |
Detailed Photos
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NMRV Model&marker |
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NMRV-063-30-VS-F1(FA)-AS-80B5-0.75KW-B3 |
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NMRV |
Means hole-input with flange |
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NRV |
Means shaft-input without flange |
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63 |
Centre-to-centre spacing of worm-gear speed reducer |
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30 |
Ratio |
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VS |
Double input shaft |
F1 (FA) |
Flange output |
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AS |
Single output shaft |
AB |
Double output shaft |
|
PAM |
Fitted for motor coupling |
80B5 |
Motor mounting facility |
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0.75kw |
Electric motor power |
B3 |
Mounting position |
NMRV NMRV+NMRV
NMRV/NRV ASSEMBLE WITH ELECTRIC MOTOR
Workshop
Manufacturing the Aluminum Housing by CNC. Lots of housings in stock.
Lots of worm gears and worm shafts in stock.
Assembling line
Packaging & Shipping
Each reducer in single carton box packed.
FAQ
Q1: Are you trading company or manufacturer ?
A: We are factory.
Q2: How long is your delivery time and shipment?
1.Sample Lead-times: 10-20 days.
2.Production Lead-times: 30-45 days after order confirmed.
Q3: What is your advantages?
1. The most competitive price and good quality.
2. Perfect technical engineers give you the best support.
3. OEM is available.
| Application: | Motor, Motorcycle, Machinery, Toy, Agricultural Machinery |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Installation: | Vertical Type |
| Layout: | Coaxial |
| Gear Shape: | Worm Gear |
| Type: | Worm Reducer |
| Customization: |
Available
| Customized Request |
|---|

What are the considerations for choosing the appropriate lubrication for gear reducers?
Choosing the appropriate lubrication for gear reducers is crucial for ensuring optimal performance, longevity, and efficiency. Several considerations should be taken into account when selecting the right lubrication:
1. Load and Torque: The magnitude of the load and torque transmitted by the gear reducer affects the lubrication’s viscosity and film strength requirements. Heavier loads may necessitate higher viscosity lubricants.
2. Operating Speed: The speed at which the gear reducer operates impacts the lubrication’s ability to maintain a consistent and protective film between gear surfaces.
3. Temperature Range: Consider the temperature range of the operating environment. Lubricants with suitable viscosity indexes are crucial to maintaining performance under varying temperature conditions.
4. Contaminant Exposure: If the gear reducer is exposed to dust, dirt, water, or other contaminants, the lubrication should have proper sealing properties and resistance to contamination.
5. Lubrication Interval: Determine the desired maintenance interval. Some lubricants require more frequent replacement, while others offer extended operational periods.
6. Compatibility with Materials: Ensure that the chosen lubricant is compatible with the materials used in the gear reducer, including gears, bearings, and seals.
7. Noise and Vibration: Some lubricants have properties that can help reduce noise and dampen vibrations, improving the overall user experience.
8. Environmental Impact: Consider environmental regulations and sustainability goals when selecting lubricants.
9. Manufacturer Recommendations: Follow the manufacturer’s recommendations and guidelines for lubrication type, viscosity grade, and maintenance intervals.
10. Monitoring and Analysis: Implement a lubrication monitoring and analysis program to assess lubricant condition and performance over time.
By carefully evaluating these considerations and consulting with lubrication experts, industries can choose the most suitable lubrication for their gear reducers, ensuring reliable and efficient operation.

How do gear reducers handle shock loads and sudden changes in torque?
Gear reducers are designed to handle shock loads and sudden changes in torque through several mechanisms that enhance their durability and reliability in challenging operating conditions.
1. Robust Construction: Gear reducers are constructed using high-strength materials and precision manufacturing techniques. This ensures that the gears, bearings, and other components can withstand sudden impacts and high torque fluctuations without deformation or failure.
2. Shock-Absorbing Features: Some gear reducer designs incorporate shock-absorbing features, such as flexible couplings, elastomeric elements, or torsionally flexible gear designs. These features help dampen and dissipate the energy from sudden shocks or torque spikes, reducing the impact on the entire system.
3. Torque Limiters: In applications where shock loads are common, torque limiters may be integrated into the gear reducer. These devices automatically disengage or slip when a certain torque threshold is exceeded, preventing damage to the gears and other components.
4. Overload Protection: Gear reducers can be equipped with overload protection mechanisms, such as shear pins or torque sensors. These mechanisms detect excessive torque and disengage the drive temporarily, allowing the system to absorb the shock or adjust to the sudden torque change.
5. Proper Lubrication: Adequate lubrication is essential for managing shock loads and sudden torque changes. High-quality lubricants reduce friction and wear, helping the gear reducer withstand dynamic forces and maintain smooth operation.
6. Dynamic Load Distribution: Gear reducers distribute dynamic loads across multiple gear teeth, which helps prevent localized stress concentrations. This feature minimizes the risk of tooth breakage and gear damage when subjected to sudden changes in torque.
By incorporating these design features and mechanisms, gear reducers can effectively handle shock loads and sudden changes in torque, ensuring the longevity and reliability of various industrial and mechanical systems.

What industries and machinery commonly utilize gear reducers?
Gear reducers are widely used across various industries and types of machinery for torque reduction and speed control. Some common industries and applications include:
- 1. Manufacturing: Gear reducers are used in manufacturing equipment such as conveyors, mixers, and packaging machines to control speed and transmit power efficiently.
- 2. Automotive: They are utilized in vehicles for applications like power transmission in transmissions and differentials.
- 3. Aerospace: Gear reducers are used in aircraft systems, including landing gear mechanisms and engine accessories.
- 4. Robotics and Automation: They play a crucial role in robotic arms, CNC machines, and automated production lines.
- 5. Mining and Construction: Gear reducers are used in heavy machinery like excavators, bulldozers, and crushers for power transmission and torque multiplication.
- 6. Energy and Power Generation: Wind turbines, hydroelectric generators, and other power generation equipment use gear reducers to convert rotational speed and transmit power.
- 7. Marine and Shipbuilding: They are used in ship propulsion systems, steering mechanisms, and anchor handling equipment.
- 8. Material Handling: Gear reducers are essential in conveyor systems, elevators, and hoists for controlled movement of materials.
- 9. Food and Beverage: They find applications in food processing equipment like mixers, grinders, and packaging machines.
- 10. Paper and Pulp: Gear reducers are used in machinery for pulp processing, paper production, and printing.
These examples represent just a fraction of the industries and machinery that benefit from the use of gear reducers to optimize power transmission and achieve the desired motion characteristics.


editor by CX 2023-09-18