China Best Sales NRV090 Worm reduction gearbox speed reducer NRV VS near me shop

Gearing Arrangement: Worm
Output Torque: 2.6 to 1760
Rated Power: 0.06kw-15kw
Input Speed: 700rpm, 1400rpm, 2800rpm
Output Speed: 7-560rpm
Model Number: NRV
Color: Silver, blue, grey
Packing: Carton & Plywood case
Packaging Details: small carton for each gearbox plywood case(110*110*0.85m) for outside
Port: ZheJiang , HangZhou

Dear customer, we are ready to serve for you!

Main features of NRV090 worm gear speed gearboxes:
1. wide speed ratio range
2. small volume, low weight, occupying small space for mounting
3. high efficiency, high mechanical strength and high quality aluminum alloy housing
4. long life service, large output torque, low noise and little vibration
5. low temperature rise, omnibearing installation, easy to connect with other machinery
6. high carry ability, elegant appearance
7. CE standard, input power can be 0.18KW-15KW
8. stable transmission


NRV 090


5:1, 7.5:1, 10:1, 15:1, 20:1, hot selling auto car shaft assy front drive rh 43410-47040 for prius 2016 with competitive price 25:1,
30:1, 40:1, 50:1, 60:1, 80:1, 100:1

Blue, Silver, Grey, Customised (Wet painting, oven painting)

Housing, cover, flange(size30-90): aluminum alloy
Housing, cover, flange(size110-150): cast iron

Worm gear: bronze for outside & nodular iron for inside

Worm shaft: 20CrMnTi with carburizing and quenching,
Surface harness: 56-62HRC

Output shaft: chromium steel-45#

Bearing: C&U brand, HCH brand

Oil Seal: NAK SKF

Carton and Wooden Case

1 Year

IEC Flange:
56B5, 56B14, 63B5, heavy duty fishing boat marine gearbox power 926kw 63B14, 71B5, 71B14, 80B5, 80B14, 90B5, 90B14, 100/112B5, 100/112B14, 132B5

Synthetic oil & Mineral oil

Our Services
We are top WORM GEAR reducer factory
Sell directly to clients to more than 20 countries including India, Turkey, Spain, Brazil, Russia, Poland, etc.
Our total sales revenue for 2014 was $10.5 MILLION USD.
Our products have CONSISTENT HIGH QUALITY and LOW PRICE. We have our own Aluminum Casting factory which guarantees the quality of the products and allow us to offer competitive price.
We do CUSTOMISED products.
Also, we are very nice people to deal with.

Advantages of our factory
Advantage 1 — Alluminium Casting Machines & Test Facilities
The owner of NMRV factory, Mr Lu also has an aluminum die casting factory with 100% stock. This aluminum die casting factory is the best in our HangZhou. We produce NMRV housing, RS550 Motor 14Teeth 14.4V16.8V18V21V For all original model Cordless Drill 22000RPM cover, flange and supply to other NMRV factory.

Advantage 2 — Sufficient Stock of Spares
To ensure our customer fast deliver time, we have sufficient stock of spares such as housing, cover, input flange, output flange, worm wheel, worm gear, oil seal, bearing.

Advantage Three — Best Machines in China
The owner of HangZhou Reducer, Mr Lu, is the sales representatives of the Chinese biggest tool equipment factory in ZHangZhoug province. He sells a lot of hobing machine, gridding machine, CNC machine and so on to other factory. As to the tool machines in our factory, all of them are equipment with best processing precision with solid technical support.

Question One:
What infomation should I tell you to confirm the order?
A: Model/Size, Transmission Ratio, Shaft directions & Order quantity.

Question Two:
What if I don’t know which 1 I need?
A:Don’t worry, Send as much information as you can, our technical team will assist you to find the right model/size you are looking for.

Question Three:
How long should I wait for the feedback after I send the enquiry?
A: Within 12 hours

Question Four:
What should I provide if I want to order NON-STANDERD reducers?
A: Drafts, Dimensions, 2571 CNC machining off-center spindle top precision manufacturer machining prototype stainless steel crusher eccentric shaft Pictures and samples if possible.

Mounting Dimensions

Dimensions of NMRV worm gearbox

The Parts of a Gearbox

There are many parts of a Gearbox, and this article will help you understand its functions and components. Learn about its maintenance and proper care, and you’ll be on your way to repairing your car. The complexity of a Gearbox also makes it easy to make mistakes. Learn about its functions and components so that you’ll be able to make the best choices possible. Read on to learn more. Then, get your car ready for winter!


Gearboxes are fully integrated mechanical components that consist of a series of gears. They also contain shafts, bearings, and a flange to mount a motor. The terms gearhead and gearbox are not often used interchangeably in the motion industry, but they are often synonymous. Gearheads are open gearing assemblies that are installed in a machine frame. Some newer designs, such as battery-powered mobile units, require tighter integration.
The power losses in a gearbox can be divided into no-load and load-dependent losses. The no-load losses originate in the gear pair and the bearings and are proportional to the ratio of shaft speed and torque. The latter is a function of the coefficient of friction and speed. The no-load losses are the most serious, since they represent the largest proportion of the total loss. This is because they increase with speed.
Temperature measurement is another important preventive maintenance practice. The heat generated by the gearbox can damage components. High-temperature oil degrades quickly at high temperatures, which is why the sump oil temperature should be monitored periodically. The maximum temperature for R&O mineral oils is 93degC. However, if the sump oil temperature is more than 200degF, it can cause seal damage, gear and bearing wear, and premature failure of the gearbox.
Regardless of its size, the gearbox is a crucial part of a car’s drivetrain. Whether the car is a sports car, a luxury car, or a farm tractor, the gearbox is an essential component of the vehicle. There are two main types of gearbox: standard and precision. Each has its own advantages and disadvantages. The most important consideration when selecting a gearbox is the torque output.
The main shaft and the clutch shaft are the two major components of a gearbox. The main shaft runs at engine speed and the countershaft may be at a lower speed. In addition to the main shaft, the clutch shaft has a bearing. The gear ratio determines the amount of torque that can be transferred between the countershaft and the main shaft. The drive shaft also has another name: the propeller shaft.
The gears, shafts, and hub/shaft connection are designed according to endurance design standards. Depending on the application, each component must be able to withstand the normal stresses that the system will experience. Oftentimes, the minimum speed range is ten to twenty m/s. However, this range can differ between different transmissions. Generally, the gears and shafts in a gearbox should have an endurance limit that is less than that limit.
The bearings in a gearbox are considered wear parts. While they should be replaced when they wear down, they can be kept in service much longer than their intended L10 life. Using predictive maintenance, manufacturers can determine when to replace the bearing before it damages the gears and other components. For a gearbox to function properly, it must have all the components listed above. And the clutch, which enables the transmission of torque, is considered the most important component.


A gearbox is a fully integrated mechanical component that consists of mating gears. It is enclosed in a housing that houses the shafts, bearings, and flange for motor mounting. The purpose of a gearbox is to increase torque and change the speed of an engine by connecting the two rotating shafts together. A gearbox is generally made up of multiple gears that are linked together using couplings, belts, chains, or hollow shaft connections. When power and torque are held constant, speed and torque are inversely proportional. The speed of a gearbox is determined by the ratio of the gears that are engaged to transmit power.
The gear ratios in a gearbox are the number of steps a motor can take to convert torque into horsepower. The amount of torque required at the wheels depends on the operating conditions. A vehicle needs more torque than its peak torque when it is moving from a standstill. Therefore, the first gear ratio is used to increase torque and move the vehicle forward. To move up a gradient, more torque is required. To maintain momentum, the intermediate gear ratio is used.
As metal-to-metal contact is a common cause of gearbox failure, it is essential to monitor the condition of these components closely. The main focus of the proactive series of tests is abnormal wear and contamination, while the preventative tests focus on oil condition and additive depletion. The AN and ferrous density tests are exceptions to this rule, but they are used more for detecting abnormal additive depletion. In addition, lubrication is critical to the efficiency of gearboxes.


Daily maintenance is a critical aspect of the life cycle of a gearbox. During maintenance, you must inspect all gearbox connection parts. Any loose or damaged connection part should be tightened immediately. Oil can be tested using an infrared thermometer and particle counters, spectrometric analysis, or ferrography. You should check for excessive wear and tear, cracks, and oil leaks. If any of these components fail, you should replace them as soon as possible.
Proper analysis of failure patterns is a necessary part of any preventative maintenance program. This analysis will help identify the root cause of gearbox failures, as well as plan for future preventative maintenance. By properly planning preventative maintenance, you can avoid the expense and inconvenience of repairing or replacing a gearbox prematurely. You can even outsource gearbox maintenance to a company whose experts are knowledgeable in this field. The results of the analysis will help you create a more effective preventative maintenance program.
It is important to check the condition of the gearbox oil periodically. The oil should be changed according to its temperature and the hours of operation. The temperature is a significant determinant of the frequency of oil changes. Higher temperatures require more frequent changes, and the level of protection from moisture and water reduces by 75%. At elevated temperatures, the oil’s molecular structure breaks down more quickly, inhibiting the formation of a protective film.
Fortunately, the gear industry has developed innovative technologies and services that can help plant operators reduce their downtime and ensure optimal performance from their industrial gears. Here are 10 steps to ensure that your gearbox continues to serve its purpose. When you are preparing for maintenance, always keep in mind the following tips:
Regular vibration analysis is a vital part of gearbox maintenance. Increased vibration signals impending problems. Visually inspect the internal gears for signs of spiraling and pitting. You can use engineers’ blue to check the contact pattern of gear teeth. If there is a misalignment, bearings or housings are worn and need replacement. Also make sure the breathers remain clean. In dirty applications, this is more difficult to do.
Proper lubrication is another key factor in the life of gearboxes. Proper lubrication prevents failure. The oil must be free of foreign materials and have the proper amount of flow. Proper lubricant selection depends on the type of gear, reduction ratio, and input power. In addition to oil level, the lubricant must be regulated for the size and shape of gears. If not, the lubricant should be changed.
Lack of proper lubrication reduces the strength of other gears. Improper maintenance reduces the life of the transmission. Whether the transmission is overloaded or undersized, excessive vibration can damage the gear. If it is not properly lubricated, it can be damaged beyond repair. Then, the need for replacement gears may arise. However, it is not a time to waste a lot of money and time on repairs.

China Best Sales NRV090 Worm reduction gearbox speed reducer NRV VS  near me shop China Best Sales NRV090 Worm reduction gearbox speed reducer NRV VS  near me shop