Product Description

NMRV   REDUCTION WORM GEARBOX
NMRV 150 worm gear motor for general industrial use refers to angular type drives. The unit provides high output torque (up to 1760 N * m), withstands significant radial loads (up to 18 000 N). Robust cast iron body gear motor has a protective coating. Mounting options: feet / flange.
Additional options:

  • reactive rod for reactive torque compensation
  • outlet flange for securing to the frame
  • variator attachment for regulating the output shaft rotation speed
  • torque limiter

Materials parts:
Body – iron, flanges – iron, worm – steel CHINAMFG worm wheel – bronze. 
Type of lubricant: synthetic ISO VG 220. 
Weight: 84 kg.

Type designation scheme

NMRV – 150 – 7.5 – 186.7 – 15 – B7

  • NMRV – worm gear motor
  • 150 – size (center distance, mm)
  • 7.5 – gear ratio
  • 186.7 – output shaft rotation speed, rpm
  • 15 – electric motor power, kW
  • B7 – mounting position

NMRV 150 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
%
7.5 373 862 36.20 93 187 1162 25.30 91 120 1410 19.90 89
10 280 879 28.00 92 140 1197 19.50 90 90 1429 15.30 88
15 187 924 20.10 90 93 1250 2 p.m.  87 60 1488 11.00 85
20 140 990 16.30 89 70 1320 11.25  86 45 1550 8.80 83
25 112 920 12.00 90 56 1203 8.30  85 36 1414 6.50 82
30 93 900 10.30 85 47 1138  7.00  80 30 1348 5.50 77
40 70 1234 10.90 83 35 1596  7.50  78 23 1837 5.90 75
50 56 1091  7.90 81 28 1426  5.50  76 18 1665 4.30 73
60 47 1571  6.30 80 23 1370  4.40  75 15 1582 3.50 71
80 35 884  4.50 72 18 1102 3.10  67 11 1354 2.40 65
100 28 848  3.50 71 14 1080 2.40  66 9 1250 1.90 62
  • 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 150

NMRV150 gear motor  has a wide range of gear ratios.
Gear ratios: 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 .

Output flange to NMRV 150 gearbox

Geared NMRV150 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

agricultural gearbox

Lubrication Practices for Extending the Lifespan of Agricultural Gearboxes

Proper lubrication is essential for ensuring the longevity and optimal performance of agricultural gearboxes. Here are some essential lubrication practices that can help extend the lifespan of these gearboxes:

  • Choose the Right Lubricant: Select a high-quality lubricant specifically designed for gearboxes and agricultural machinery. Consider factors such as viscosity, temperature range, and load-bearing capacity to ensure compatibility with the gearbox’s operating conditions.
  • Regular Inspection: Perform regular visual inspections of the gearbox and lubricant to check for signs of contamination, wear, or inadequate lubrication. Address any issues promptly to prevent further damage.
  • Cleanliness: Maintain a clean environment around the gearbox to minimize the risk of dirt, debris, and moisture entering the gearbox housing. Contaminants can compromise the lubricant’s effectiveness and accelerate wear.
  • Lubricant Level: Monitor and maintain the proper lubricant level in the gearbox. Insufficient lubrication can lead to increased friction and heat, causing premature wear and potential damage to gears and bearings.
  • Replace Lubricant: Follow the manufacturer’s recommendations for lubricant change intervals. Over time, lubricants can degrade, lose their properties, and become contaminated. Regularly replacing the lubricant helps ensure optimal performance.
  • Use Lubrication Schedule: Create a lubrication schedule based on the gearbox’s usage and operating conditions. Stick to the recommended intervals for applying or changing lubricant to prevent under-lubrication or over-lubrication.
  • Appropriate Lubrication Method: Follow the manufacturer’s guidelines for the correct lubrication method, whether it’s through oil bath, grease, or automatic lubrication systems. Proper application ensures even distribution of lubricant across gear surfaces.
  • Temperature Considerations: Be aware of temperature variations in your operating environment. Extreme temperatures can affect lubricant viscosity and performance. Choose a lubricant that can handle the temperature range of your equipment.
  • Expert Advice: Consult the gearbox manufacturer or a lubrication specialist to determine the best lubrication practices for your specific agricultural gearbox model and application.

By adhering to these lubrication practices, farmers can maximize the lifespan of their agricultural gearboxes, minimize downtime, and ensure efficient and reliable operation of their equipment.

agricultural gearbox

Factors to Consider When Selecting the Right Gearbox for Farm Machinery

Choosing the appropriate gearbox for farm machinery is crucial to ensure optimal performance and efficiency. Here are the key factors to consider when selecting the right gearbox:

  • Power and Torque Requirements: Assess the power and torque needed for the specific task the machinery will perform. Select a gearbox that can handle the required load without straining the components.
  • Speed Variation: Determine if the machinery requires variable speed control for different tasks. Some gearboxes offer adjustable speed options to match varying conditions and applications.
  • Task Compatibility: Ensure that the chosen gearbox is compatible with the implements and attachments the machinery will use. Different tasks may require different gear ratios and torque capabilities.
  • Efficiency: Opt for gearboxes known for their efficiency in power transmission. Efficient gearboxes minimize energy losses and maximize the output of the machinery.
  • Durability: Farming environments can be demanding, so select a gearbox that is built to withstand the conditions, such as exposure to dirt, moisture, and impacts.
  • Size and Weight: Consider the available space and weight limits on the machinery. Choose a gearbox that fits within these constraints without compromising performance.
  • Maintenance: Evaluate the maintenance requirements of the gearbox. Gearboxes that are easy to maintain and service can minimize downtime and keep the machinery running smoothly.
  • Cost: Balance the initial cost of the gearbox with its long-term benefits and performance. Investing in a quality gearbox can lead to better overall cost-effectiveness over time.
  • Compatibility: Ensure that the gearbox is compatible with the power source (such as the tractor’s power take-off) and other components of the machinery.
  • Manufacturer Reputation: Choose gearboxes from reputable manufacturers with a history of producing reliable and high-quality agricultural machinery components.

By carefully considering these factors, farmers can select the right gearbox that meets the specific needs of their farm machinery, leading to enhanced efficiency, productivity, and longevity of equipment.

agricultural gearbox

Maintenance Requirements for Agricultural Gearboxes

Maintaining agricultural gearboxes is crucial to ensure the smooth and efficient operation of farming equipment. Proper maintenance helps extend the lifespan of gearboxes and prevents costly breakdowns. Here are the key maintenance requirements:

  • Regular Inspections: Conduct routine visual inspections to check for signs of wear, damage, leaks, or misalignment. Regularly inspect gear teeth, seals, and bearings for any issues.
  • Lubrication: Proper lubrication is essential to minimize friction and wear in gearboxes. Follow the manufacturer’s guidelines for the type of lubricant to use and the recommended intervals for lubrication.
  • Lubricant Checks: Monitor the gearbox’s lubricant levels and quality regularly. Replace or replenish lubricants as needed, and ensure that contaminants are kept out of the lubrication system.
  • Tightening Bolts and Fasteners: Check and tighten bolts, nuts, and fasteners to prevent loosening due to vibrations during operation. Loose components can lead to misalignment and premature wear.
  • Seal Inspection: Examine seals for leaks and proper sealing. Damaged or worn seals should be replaced promptly to prevent lubricant leakage and the ingress of contaminants.
  • Cleaning: Keep gearboxes clean by removing dirt, debris, and residue. Regular cleaning prevents abrasive particles from entering the gearbox and causing damage.
  • Alignment: Ensure that gearboxes are properly aligned with connected components, such as shafts and couplings. Misalignment can lead to increased wear and reduced efficiency.
  • Temperature Monitoring: Monitor the operating temperature of the gearbox. Abnormal temperature increases may indicate issues like overloading or insufficient lubrication.
  • Filter Replacement: If the gearbox has a filtration system, regularly replace or clean the filters to prevent contaminants from entering the gearbox.
  • Expert Inspection: Periodically have gearboxes inspected by qualified technicians. They can identify potential problems that may not be visible during routine inspections.

Adhering to these maintenance requirements ensures that agricultural gearboxes remain in optimal condition and contribute to the reliability and efficiency of farming equipment. Regular maintenance not only prevents unexpected downtime but also prolongs the service life of the gearboxes, ultimately benefiting the productivity of agricultural operations.

China factory Nmrv/Nrv Nmrv150 Worm Gear Speed Reduction Reducer Gearbox   best automatic gearbox	China factory Nmrv/Nrv Nmrv150 Worm Gear Speed Reduction Reducer Gearbox   best automatic gearbox
editor by CX 2024-02-14