NMRV Series Motor Gearbox 

As one of the relatively common gearboxes in the family of worm gearboxes, it adopts  light and rustless aluminum alloy box and is composed of  worm gears and worms, featured by compact structure, vast range of ratios, light vibration, low noise, low energy consumption, stable operation, high transmission torque and self-locking under some condition. The product is widely applied to light industry machinery, textile equipment and grain machinery,etc.

1. Gearbox Material

• Housing: die-cast aluminum alloy (Housing size: 025-090); cast iron (Housing size: 110-150)
• Shaft: 20Cr, carbonize and quencher heat treatment make the hardness of gear tooth surface up to 56-62 HRC, retain carburization layer’s thickness between 0.3-0.5mm after precise grinding
• Worm Wheel: Wearable bronze alloy

2. Surface Painting

For Aluminum Alloy Housing:

    1. Shot blasting and special antiseptic treatment on the aluminum alloy surface

    2. After phosphating, paint with blue or sliver.

For Cast Iron Housing:

    Before paint with blue or sliver, need paint with red antirust pain first.

3. Technical Parameters

 ♦OEM Service

We can be your OEM supplier to meet your special requirements and customize your

desired models.

♦Packaging Service

Your goods will be packed properly and safely.

♦Shipping Service

We will recommend you the safest, fastest and cheapest shipping way.

♦Delivery Service

We promise to deliver your goods in shortest time. 

♦Response Service

We ensure to answer your enquiry online within 12 hours.

♦After Sales Service

Any problems in the process of using will be solved by our highly skilled service engineers rapidly.

♦Warranty

 One year. Free spare parts will be provided as non-artificial quality reason within 12 months.

Packing details: Standard export package(carton/wooden case and pallet)

Delivery details: 15-25 days after receiving the advanced payment, depending on the ordered quantity.Q1: What's your business type?

A: We are a manufacturer, and also have import & export trading right.

Q2: What's your main products?
A: Power transmission gearboxes. 
Such as: industrial  gearbox, worm/helical/bevel/cycloidal pin wheel gearbox, heavy duty gearbox, gearbox for crane/extruder/excavator/rolling mill/cement mill, etc.

Q3: What about your warranty?

A:12 to 18 months warranty according to different products and lifetime service.

Q4: What's your MOQ?
A: 1 set for different kinds of gearboxes.

Q5: Can you supply customized gearboxes?
A: Yes, we can customize any kinds of gearboxes as per your requirements or drawings.

Q6: What information should be given, if I want to buy gearboxes?
A: Type, speed ratio, input / output speed, rated power, mounting position,service factor and application. It is very nice if you can supply some pictures or drawings.

Q7: If we don’t find what we want on your website, what should we do?
A: We offer three options:
1, You can email us the pictures, drawings or description details. We will try to design your products on the basis of our standard models.
2, Our R&D department is professional for OEM/ODM products by drawing/samples, you can send us samples, we do customized design for your bulk purchasing.
3, We can develop new products if they have good market. We have already developed many items for special use successfully, such as special gearbox for agitator, cement conveyor and so on.