Product Description

NMRV   REDUCTION WORM GEARBOX
The NMRV 075 lowering motor gearbox includes a worm gearbox with a single gear stage and an IEC asynchronous motor. The drive is optionally equipped with an output flange, a reaction rod, and double-sided shafts. Engine power is 0.25 – 4 kW.
Parts materials:
Case – aluminum, flanges – aluminum, worm – steel, worm wheel CHINAMFG – bronze. 
Type of lubricant: synthetic ISO VG 320. 
Weight: 9 kg.

Type designation scheme

NMRV – 075 – 40 – 22.5 – 0.75 – B1

  • NMRV – worm gear motor
  • 075 – size (center distance, mm)
  • 40 – gear ratio
  • 22.5 – output shaft rotation speed, rpm
  • 0.75 – electric motor power, kW
  • B1 – mounting position

NMRV 075 gearbox performance

i 1 = 2800 rpm 1 = 1400 rpm 1 = 900, rpm
2 ,
rpm
2M ,
N * m
P
kw
RD
%
2 ,
rpm
2M ,
N * m
P
kw
RD
%
2 ,
rpm
2M ,
N * m
P
kw
RD
%
7.5 373 169 7.11 93 187 235 5.05 91 120 273  3.86 89
10 280 178 5.66 92 140  237 3.86 90 90 278  2.98 88
15 187 191  4.12 91 93  252 2.79  88 60 295  2.16 86
20 140 176  2.93 88 70  240 2.07  85 45 265  1.52 82
25 112 208  2.71 90 56  271 1.87  85 36 309  1.42 82
30 93 221  2.50 86 47  263  1.60  81 30 328  1.32 78
40 70 201  1.80 82 35  261  1.24  77 23 289  0.94 74
50 56 206  1.47 82 28  268  1.02  77 18 302  0.77 74
60 47 178  1.17 75 23  238  0.82  70 15 256  0.61 66
80 35 181  0.86 77 18  233  0.61  72 11 280  0.46 70
100 28 153  0.66 68 14  206  0.48  63 9 225  0.36 59
  • n1 – rotational speed el. engine;
  • n2 – revolutions on the output shaft;
  • T 2M – torque on the output shaft;
  • P is the maximum allowable engine power;
  • RD – efficiency

GEARBOX FEATURE

1.Good quality,long life time,low noise.
2.Compact,convenient.
3.High efficiency,big torque.

 

Overall and mounting dimensions NMRV 075

NMRV075 gear motor  has a wide range of gear ratios.
Gear ratios:  5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 .

Output flange to NMRV 075 gearbox

Geared NMRV075 can be supplied with unilateral or bilateral output shaft. 
The gearbox comes standard with a hollow output shaft

A torque arm is an additional option to the gearbox.

  Model  NMRV SERIES
  Single Stage  RV25-RV150
  Ratio  7.5-100
  Input Power  0.06KW-15KW
  Output Speed  14-280rpm
  Output Torque   5-1800Nm
Core parts  worm wheel,worm shaft
 Core parts material      worm shaft:20 Cr Mn Ti,worm wheel:Nodular cast iron interal,9-4 copper external
  Lubrication   RV30-90:synthetic oil, RV110-150:GN460-W mineral oil
 Bearings  C&U

 
 
 

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Application: Motor, Motorcycle, Machinery, Agricultural Machinery, Industry
Hardness: Hardened
Installation: Any Angle
Gear Shape: Worm Gear
Step: Single-Step
Type: Worm and Wormwheel
Samples:
US$ 20/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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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

Diagnosing and Fixing Oil Leakage in a Worm Gearbox

Oil leakage in a worm gearbox can lead to reduced lubrication, increased friction, and potential damage to the gearbox components. Here's a step-by-step process to diagnose and fix oil leakage:

  1. Inspect the Gearbox: Perform a visual inspection of the gearbox to identify the source of the leakage. Check for oil stains, wet spots, or oil pooling around the gearbox.
  2. Check Seals and Gaskets: Inspect the seals, gaskets, and O-rings for any signs of wear, cracks, or damage. These components are common points of leakage.
  3. Tighten Bolts and Fasteners: Ensure that all bolts, screws, and fasteners are properly tightened. Loose fasteners can create gaps that allow oil to escape.
  4. Replace Damaged Seals: If you find damaged seals or gaskets, replace them with new ones. Use seals that are compatible with the operating conditions and lubricant.
  5. Check Breather Vent: A clogged or malfunctioning breather vent can cause pressure buildup inside the gearbox, leading to leakage. Clean or replace the breather vent if necessary.
  6. Examine Shaft Seals: Check the shaft seals for wear or damage. If they're worn out, replace them with seals of the appropriate size and material.
  7. Use Proper Lubricant: Ensure that you're using the correct lubricant recommended for the gearbox. Using the wrong type of lubricant can cause leaks.
  8. Apply Sealants: In some cases, applying a suitable sealant to the joints and connections can help prevent leaks. Follow the manufacturer's instructions for proper application.
  9. Monitor Leakage: After addressing the issues, monitor the gearbox for any signs of continued leakage. If leakage persists, further investigation may be required.
  10. Regular Maintenance: Implement a regular maintenance schedule that includes checking seals, gaskets, and other potential leakage points. Timely maintenance can prevent future leakage issues.

If you're unsure about diagnosing or fixing oil leakage in a worm gearbox, consider consulting with a professional or gearbox manufacturer to ensure proper resolution.

worm gearbox

What is a Worm Gearbox and How Does It Work?

A worm gearbox, also known as a , 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 wholesaler Nmrv/Nrv Nmrv075 Worm Gear Speed Reduction Reducer Gearbox   gearbox definition		China wholesaler Nmrv/Nrv Nmrv075 Worm Gear Speed Reduction Reducer Gearbox   gearbox definition
editor by CX 2024-02-24