When a newly installed reducer generates heat in a short period of time, it is usually caused by improper assembly or parameter setting errors during the commissioning phase. In response to this situation, it is recommended to conduct systematic investigation and rectification according to the following four key dimensions:
1. Check the status of the lubrication system
Poor lubrication is the core cause of increased friction and temperature rise. First, check whether the lubricating oil level is at a reasonable height (usually at the center line of the window). Too much oil will cause the oil churning to lose power and increase heat generation. Too little oil will cause dry friction due to insufficient lubrication. Secondly, confirm whether the type and viscosity grade of the lubricating oil added meet the working conditions of the reducer. The wrong type of oil will cause the oil film to rupture. If the oil is found to be turbid or mixed with metal shavings and other impurities, the old oil should be drained immediately and the oil circuit should be thoroughly cleaned before replacing it with qualified new oil.
2. Calibration installation and alignment accuracy
Assembly errors are a common cause of abnormal heating in new equipment. A dial indicator or laser alignment instrument must be used to recalibrate the coaxiality of the reducer input/output shaft, motor, and load equipment to ensure that the radial deviation is controlled within 0.05mm to avoid additional additional loads and vibrations due to eccentric connections. At the same time, check whether the bearing preload force is too large and whether the gear meshing clearance is appropriate. Overtight assembly will cause serious internal friction and heat generation. In addition, it is necessary to confirm that anchor bolts and other fasteners have been tightened in diagonal order to prevent abnormal stress caused by loose foundation.
3. Evaluate load matching
Verify whether the current actual operating load exceeds the rated torque range of the reducer. During the trial operation stage of a newly installed machine, the process may not be stable or the equipment may be too small, resulting in the phenomenon of "a small horse pulling a large cart", causing the internal gears and bearings to overload for a long time and heat up sharply. If serious overloading is found, the process needs to be adjusted in time to reduce the load, or the reducer must be replaced with a larger size if necessary.
4. Improve external cooling conditions
Check whether the installation environment of the reducer is poorly ventilated or closed. Clean the dust, oil or debris attached to the surface of the case and the heat sink to ensure that the heat can be smoothly conducted and dissipated. If there are high-temperature heat sources around the equipment, or it is under continuous heavy-load conditions, you should consider installing cooling fans, heat sinks or even water cooling devices and other forced cooling measures to improve the system"s thermal balance capability.
Safety tips:
During the troubleshooting process, please pay close attention to the shell temperature of the reducer. Generally speaking, when the bearing temperature reaches 70°C, a first-level early warning should be triggered and closely monitored; when it rises to 80°C, the machine must be shut down for comprehensive inspection; if it exceeds the dangerous threshold of 90°C, the power must be cut off immediately and the operation must be stopped. After cooling, the bearing must be disassembled and inspected to prevent serious damage such as sintering or locking of components.
