The planetary reducer is abnormally hot, what is the reason? 2026-07-17
Planetary reducer is the core precision component of industrial transmission equipment. Its working temperature directly determines the equipment's operating stability, service life and transmission accuracy. When the equipment is operating normally, the operating temperature must be strictly controlled below 90°C. Once overtemperature operation continues, it is an abnormal heating failure. Long-term high temperature will accelerate the aging of lubricating oil, increase the wear of gears and bearings, and reduce transmission efficiency. In severe cases, problems such as jamming, abnormal noise, locking, and component damage may occur, directly leading to equipment shutdown. Based on on-site operation and maintenance experience, the core causes of abnormal heating of reducers are mainly divided into four categories. The principles, hazards and targeted solutions of various types of faults are detailed as follows: 1. Excessive load (overload operation) Excessive load is the most common failure cause of reducer heating. It means that the actual operating load of the equipment is greater than the rated load marked on the reducer nameplate for a long time, including instantaneous impact overload and long-term continuous overload. Under overload conditions, the planetary gears and cylindrical gears inside the reducer
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