Product Description
Overview
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Quick Details
Gearing Arrangement: Worm Brand Name: EED
Input Speed: 1400 rpm Output Speed: 14 rpm to 186 rpm
Rated Power: 0.06 ~ 4KW Output Torque: 2.6-479N.M
Color: Blue/Silver or on request Origin: ZHangZhoug, China (Mainland)
Warranty: 1 Year Application: Industry
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Supply Ability
Supply Ability: 20000 Piece/Pieces per Month
Extra Service: OEM is welcome
QC System: ISO9001:2008
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Packaging & Delivery
Package: Wooden box/Paper carton
Port: HangZhou/ZheJiang or on request
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| TYPE | Worm Gear Speed Reducer/Worm Gearbox |
| MODEL | NMRV series size:571,030,040,050,063,075,090,110,130,150 |
| RATIO | 5,7.5,10,15,20,25,30,40,50,60,80,100 |
| COLOR | Blue(RAL5571)/Silver grey (RAL9571) or on your request |
| MATERIAL | Housing:Aluminum alloy |
| PACKING | Wooden box/Paper carton |
| BEARING | C&U |
| WARRANTY | 1 Year |
| INPUT POWER | 0.09KM-15KM |
| USAGES | Foodstuffs, Ceramics, Packing, Chemicals, Pharmacy, Plastics, Paper-making, Machine-tools |
| IEC FLANGE | IEC standard flange or on request |
| LUBRICANT | Shell or Henry |
About CHINAMFG since 1984
HangZhou Melchizedek Import & Export Co., Ltd. is a leader manufactur in mechanism field and punching/stamp ing field since 1984. Our main product, NMRV worm gear speed reducer and series helical gearbox, XDR, XDF, XDK, XDS have reached the advanced technique index of the congeneric European and Janpanese produc ts. We offer standard gears, sprockets, chains, pulleys, couplings, bushes and so on. We also can accept orders of non-standard products, such as gears, shafts, punching parts ect, according to customers’ drawings or sam ples.
Our company has complete set of equipment including CNC, lathes, milling machines, gear hobbing machine, g ear grinding machine, gear honing machine, gear shaping machine, worm grinder, grinding machines, drilling m achines, boringmachines, planer, drawing benches, punches, hydraulic presses, plate shearing machines and s o on. We have advanced testing equipments as well.
Our company has established favorable cooperation relationships with sub-suppliers involving casting, raw material, heat treatment, surface finishing and so on.
The most advantage of the speed reducer is the technique of cobber clad, which can enhance the occlusal force between the bronze and core wheel.
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| Application: | Motor, Machinery, Marine, Agricultural Machinery |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Installation: | as for Request |
| Layout: | Worm and Wormwheel |
| Gear Shape: | Worm Gear |
| Step: | Single-Step |
| Customization: |
Available
| Customized Request |
|---|

Advantages of Using Worm Gear in an NMRV Gearbox
Worm gears offer several advantages when used in an NMRV gearbox:
1. High Reduction Ratio: Worm gears provide a high reduction ratio in a compact form, allowing for significant speed reduction in a single stage.
2. High Efficiency: While worm gears typically have lower mechanical efficiency compared to some other gear types, the design of the NMRV gearbox optimizes efficiency by using a bronze worm gear and a self-locking mechanism that minimizes backdriving.
3. Compact Design: Worm gears have a compact and space-efficient design, making them suitable for applications with limited installation space.
4. Smooth and Quiet Operation: The meshing of worm gears and the helical design of the worm result in relatively smooth and quiet operation.
5. Self-Locking: Worm gears inherently have a self-locking characteristic, meaning that the gear cannot easily be back-driven by the worm. This property is beneficial for applications where holding position without external locking mechanisms is essential.
6. High Torque Capacity: Worm gears can transmit high torque loads, making them suitable for applications that require high torque output.
7. Simple Lubrication: The design of the NMRV gearbox allows for efficient lubrication of the worm gear, ensuring optimal performance and longevity.
These advantages make worm gears a popular choice for NMRV gearboxes in various industrial applications, where their characteristics contribute to reliable and efficient power transmission.

Lifespan of an NMRV Gearbox
The lifespan of an NMRV (worm gear) gearbox can vary based on several factors, including the quality of manufacturing, proper maintenance practices, operating conditions, and the specific application it is used for. However, when designed, manufactured, and maintained properly, NMRV gearboxes can have a long and reliable service life.
High-quality NMRV gearboxes that are made from durable materials, precisely machined, and assembled with care tend to have a longer lifespan. Regular maintenance, including proper lubrication, inspection, and addressing any signs of wear or damage, can significantly extend the gearbox’s operational life.
The operating conditions in which the gearbox is used also play a role in determining its lifespan. Factors such as load, temperature, speed, and environment can impact the wear and tear on the gearbox components.
It’s important to follow the manufacturer’s recommendations for maintenance intervals and procedures to ensure optimal performance and longevity of the NMRV gearbox. By adhering to these guidelines and addressing any issues promptly, users can expect an NMRV gearbox to provide reliable service for many years.

Working Principle of an NMRV Gearbox
An NMRV gearbox, also known as a worm gear reducer, operates based on a worm and worm wheel mechanism. Here’s how it works:
The gearbox consists of two main components: the worm (a screw-like shaft) and the worm wheel (a toothed wheel). The worm is driven by the input power source, while the worm wheel is connected to the output shaft.
As the worm rotates, its threaded shaft engages with the teeth of the worm wheel. The helical shape of the worm causes the teeth of the worm wheel to push against each other, resulting in a smooth and gradual transfer of motion. This mechanism provides the speed reduction and torque multiplication required for various applications.
One key characteristic of NMRV gearboxes is that the worm can turn the worm wheel, but the reverse is not possible due to the high friction generated by the helical threads. This feature prevents the output shaft from back-driving the input shaft, providing mechanical locking and enhancing safety and stability in applications.
The NMRV gearbox’s operation is continuous, and its simple design contributes to its reliability and efficiency. It is important to ensure proper lubrication to minimize wear and heat generation during operation.


editor by CX 2024-03-11