Common problems and causes of helical gearbox

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1. Reducer heat and oil leakage

In order to improve efficiency, worm gear reducers generally use non-ferrous metals as worm wheels, and worms use hard steel. Because it is a sliding friction drive, greater displacement will occur during operation, which will cause differences in thermal expansion between the parts and seals of the Chengsu machine, thereby forming gaps on each mating surface, and the lubricating oil will become thinner due to the increase in temperature leakage.
There are four main reasons for this situation:
One. The combination of materials is unreasonable;
Two. is the poor quality of the friction surface;
Three. The choice of the amount of lubricant added is incorrect;
Four. Poor assembly quality and use environment.

2. Worm gear wear

The worm wheel is generally made of tin bronze, and the matched worm material is hardened with 45 steel to HRC4555, or 40Cr hardened to HRC5055, and then ground by a worm grinder to higher than Ra0.8μmo. The machine wears slowly during normal operation, and some reducers can be used More than 10 years. If the wear rate is fast, it is necessary to consider whether the selection is correct, whether it is overloaded, and the material of the worm gear, assembly quality or use environment.

3. Transmission pinion helical gear wear

It usually occurs on the reducer installed vertically, mainly related to the amount of lubricating oil added and the oil variety. When installed vertically, it is easy to cause insufficient lubricating oil. When the Chengspeed engine stops running, the transmission gear oil between the motor and the reducer will be lost, and the gear will not get the proper lubrication protection. When the reducer is started, the gear is not effectively lubricated, causing mechanical wear and even damage.

4. Worm bearing damage

When a failure occurs, even if the gearbox is well sealed, it is often found that the gear oil in the reducer is emulsified, and the bearings are corroded, corroded, and damaged. This is because the temperature of the gear oil rises and cools after the Chengsu engine restarts, and the condensate produced is mixed with water. Of course, it is also closely related to the bearing quality and assembly process.

The above are the common problems and causes of helical gear reducers

Company Profile

Zhejiang Wuma Reducer Co. Ltd is a national Hi-tech enterprise who pecialized in developing and production of various types of speed reducers.Our main products are RV series worm reducerhelical gearbox, WAH series hypoid gear reducer, precision planetary gearbox etc., more than ten series of products. We can also provide the service with special and customized products. Our products have been widely sold to all over China and exported to other countries and regions like Europe, America, Hong Kong, Taiwan and Southeast Asia and so on.

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