Good composite bearings to be checked after installation, should be in place to ensure that the bearing, rotating flexible, non-catching phenomenon, such as improper bearing installation, bearing temperature will rise rapidly and damage, and even death card bearing fracture major accidents occurred.
Secondly, bearing temperature, and it can be presumed according to the external temperature of the bearing seat. But the use of direct measurement of the bearing outer ring hole temperature is more accurate. Bearing temperature gradually increased from the start of the operation, the temperature is usually 1 to 2 hours after stabilization. If the bearing mounting bad, the temperature will soar, abnormal high temperature. The reasons such as too much lubricant, the bearing clearance is too small, poor installation, seal friction and too big. High-speed rotation of the occasion, bearing structure, lubrication of choosing the wrong and so is its cause.
Third, small machinery can be manually rotated to confirm rotate smoothly. Check project dysfunctional because nick, indentation caused due to poor installation, poor mount processing and the torque generated unstable moment due clearance is too small, installation error, seal friction caused by too large Wait. Without exception, you can start power operation.
Fourth, large machinery can not be rotated manually, so start immediately after cutting power load, idle machinery, check for vibration, noise, whether there is contact with rotating parts, etc., after confirming that no abnormalities into power operation.