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First, the cause of the bearing exceeding normal temperature during work may be:
1. After the trial operation of the new machine or replacement of bearing bushes, the contact surface between the bearing and the journal may be too small (with too small clearance) or non-uniformly fitting, making the specific pressure on the unit area too large;
2, bearing deflection or crankshaft bending, distortion;
3, the quality of the bearing is not good, the quality of the lubricating oil does not match or the viscosity is small, or the oil circuit is blocked. The oil supply pressure of the gear oil pump is too low to interrupt the oil supply, causing the shaft bush to be deficient in oil and producing dry friction.
4, bearing debris or lubricating oil too much, too dirty;
5, uneven wear of the bearing shell;
6. When the spindle and spindle couplings are installed, there is no alignment and the error is too large, causing the two axes to tilt.
Second, the exclusion method:
1, scratching the bearing with a painting method to make it meet the requirements of the contact surface, and strive to improve the specific pressure on the unit area;
2, properly adjust the gap, check the crankshaft bending, twisting, change the crankshaft according to conditions or repair;
3, strictly control the quality of the bearing, check the oil pipe and gear pump, use the quality requirements of the lubricating oil, check the adjustment of the oil pump to meet the pressure requirements;
4, timely cleaning and replacement of new oil, adjust the oil pressure;
5, replace the new bearing;
6. The concentricity of the two machines must be positive. The value of the leveling tolerance must be in accordance with the values ​​specified in the machine specifications. Especially when the compressor and motor are rigidly connected, more attention should be paid to correcting.
Lifting equipment bearings overheated tell you how to deal with?
Regardless of mechanical equipment such as conveying equipment or lifting equipment or other industrial dust collectors, the bearing component is indispensable in the product. It is often encountered in the daily work of bearing overheating conditions, if not handled properly Can affect production or cause mechanical damage.