You can refer to our catalogue to choose the gearbox or we can help to choose when you provide the technical information of required output torque, output speed and motor parameter etc.

a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor information etc.

b) Housing color.

c) Purchase quantity.

d) Other special requirements.

a) Protected against rain, snow, humidity, dust and impact.

b) Place wood blocks or other material between the gearbox and ground.

c) The opened but not used gear units should be added with the anti-rust oil on their surface, and then return back to the container in time.

d) If the gearbox has been stored for 2 years or even longer time, please check the cleanliness and mechanical damage and  whether the anti-rust layer is still there during the regular check-up.

Tighten the bolts on the surface of gearbox and observe the unit. If the oil is still leaking, please contact our sales representative at Foreign Trade Department.

After a new gearbox is being used about 400 hours or 3 months, the lubrication needs to be changed. Afterthat, the oil changing cycle is about every 4000 hours; please do not mix-use different brands of lubrication. It should keep enough amount of lubrication in the gearbox housing and check it regularly. When it is found that the lubrication is deteriorated or the amount is decreased, the lubrication should be changed or filled up in time.

When the gearbox is breakdown, do not disassemble the parts first. Please contact the relative sales representative at our Foreign Trade Department and provide the information shown on the nameplate, like gearbox specification ans serial number; time used; fault type as well as the quantity of problemed ones. Finally take the appropriate action.

It is properly caused by the unevenly mesh between gears or the bearing is damaged. The possible solution is to check the lubrication and change bearings. Moreover, you can also ask our sales representative for further advise.

We offer one year warranty since the vessel departure date left China.

Provide Green And Efficient Transmission Solutions For The World

Since WUMA started manufacturing gear reducers / gearboxes in 1995, we have been committed to providing high quality products and industry solutions to our global customers in the field of gear transmission. WUMA's gearboxes have been widely sold to all over China and exported to other countries and regions like Europe, North America, South America, Southeast Asia, etc.