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Inspection of roller bearing operation test

wallpapers Products 2021-08-27
Operation inspection of roller bearings after installation
After the installation of roller bearings, in order to check whether the installation is correct, it is necessary to carry out an operation inspection. Small machines can be manually rotated to confirm whether the rotation is smooth. Inspection items include foreign body, scar, indentation caused by poor operation; Torque instability caused by poor installation and poor processing of mounting seat; Too small clearance caused by too much torque; Installation error, sealing friction, etc. If there is no exception, you can start the power operation.
Large machinery can not be manually rotated, no-load start immediately cut off the power, the machine idle operation. Check vibration, noise and contact with rotating parts. After confirming that nothing is abnormal, start the power operation.
Power operation starts at low speed with no load and slowly increases to rated operation under specified conditions. The items to be checked during the test run are: whether there is abnormal sound, bearing temperature change, lubricating oil leakage or discoloration. If any abnormality is found, the operation should be stopped immediately and the machine should be checked. If necessary, the roller bearing should be removed for inspection.
Roller bearing temperature inspection
Roller bearing temperature can generally be estimated according to the external temperature of the bearing seat. However, it is more accurate to directly measure the temperature of the bearing outer ring using the oil hole. Bearing temperature rises gradually from the beginning of the operation, and usually stabilizes after 1 ~ 2 hours. If the bearing is improperly installed, the temperature will rise sharply, resulting in abnormally high temperatures. Reasons include too much lubricant, too small bearing clearance, poor installation, too much friction sealing device. In the case of high-speed rotation, the wrong choice of bearing structure and lubrication method is also one of the reasons.
Check the rotating sound of roller bearings
Check the rotating sound of roller bearings with a stethoscope etc. Strong metal noise, abnormal sound, irregular sound and so on indicate abnormal. Causes include poor lubrication, poor shaft or housing accuracy, bearing damage and foreign body intrusion.
For medium and large cylindrical roller bearings or tapered roller bearings, if grease is added to lubricate, especially in winter, low temperature and other environmental conditions, rolling noise problems will occur. In general, even if rolling noise occurs, the temperature of the bearing will not increase, and the fatigue life will not be affected. The life of grease can be used normally.
Roller bearings supplier
FUWEI(LUOYANG) METALLURGY BEARING with the trade mark ( FV ) is a professional manufacturer of heavy industry bearings. FV Bearings produces and provides the most comprehensive range of industrial bearings including Bearings for Steel Industry, roller bearings Bearings For Cement Industry, slewing bearings and much more. If you have any problems with the use of roller bearings or get the latest bearings price list from FV bearings, you can send an email to sales@fv-bearing.com. Describe your needs and we’ll reply within 48 hrs. 

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