Test run to check the importance of the quality of INA thrust ball bearing installation

To check the INA bearing installation is correct, must carry on the test run check after installation. For small machines, can use first hand plate moving parts, check the rotation of the thrust ball bearing flexibility, if not the following anomalies, the examination of the dynamic operation again. Jam - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Reason: the foreign invasion, rolling parts such as scar - excessive torque - - - - - - - - Reason: the friction of the sealing device, clearance is too small, installation error, etc. Rotary torque imbalance - - - Reason: incorrect installation, installation error, etc. For large machines cannot be plate motion with the hand, can be started under no-load condition, then immediately turn off the power, inertia operation. At this time, after confirming that no abnormal vibration or noise, rotating, after normal to enter the power operation. Into the dynamic operation, should from the low speed with no load startup, gradually achieve specified operating conditions. Dynamic inspection is mainly based on sound operation, temperature and vibration to judge, should immediately find out the reason, must INA bearings will be removed for inspection. INA bearing sound check, can use commonly listening well. INA bearing temperature check, can according to the shell temperature commonly speculate, but using the oil hole such as direct measurement of the temperature of thrust ball bearing outer ring is the most correct. When the bearing temperature, first of all determine whether false action, such as really rise, should do the following treatment: ( 1) 。 Check the cooling water pressure, water flow and pipeline system is normal. If water is likely to be lower filter blockage, cannot be handled in a timely manner, to stop treatment, when confirm can work, then put into use. ( 2) 。 Should be to check if the governor oil pressure, oil pressure is low can lead to cooling water hydraulic valve closed. ( 3) 。 Check for different thrust ball bearing, INA bearing and detect bearing degrees whether there are abnormal. ( 4) 。 Take oil whether there is a change of color, sample observation and test to see whether metamorphism. If confirm the degradation new oil should be replaced downtime. ( 5) 。 Check the oil standard oil level is normal, if abnormal, check that the sump oil discharge valve is shut. If the matter, should fill oil, if is the sealant mat permeability oil, should stop processing. When we are in the use of INA bearings, if it is found that the temperature is very high, is to stop the equipment running, and find out its reason, and provide solution for processing according to the above, but may be due to the reasons of thrust ball bearing heating is different, so the solution is also different, so still have to treat, particular case is particular completed with the help of the technical staff.