Thrust ball bearing stripping damage and preventive maintenance countermeasures

TIMKEN thrust ball bearing, if there is no wrong choice can be used correctly, until the bearing life, can use for a long time, in this case, the damage status to divest. Damage status: when bearing load bearing rotation again, inner ring and outer ring raceway surface or rolling decent present designed stripping due to rolling fatigue phenomenon. Reason: too much load. Install the bad ( Non linear) The torque load foreign invasion, into the water. Poor lubrication, lubricants inappropriate bearing clearance is not appropriate. Bearing box accuracy is bad, the uneven rigidity of shaft deflection of bearing box big rust, erosion point, scratch and indentation ( The surface deformation phenomenon) The development of the cause. Measures: check the size of load and again institute of bearing to improve installation method is used to improve the sealing device, when stop rust. Using the appropriate lubricant viscosity, improving the lubrication method. Check the shaft and the precision of the bearing housing. Check the clearance. According to the action at TIMKEN load direction of thrust ball bearing, nature and which side of the inner and outer ring spinning, then each ring on the load can be divided into directional load rotating load, static load or not. Rotation under load and not directional load ring should take interference fit ( Interference fit) Ring, under static loading, desirable transition fit or movable fit ( Clearance fit) 。 TIMKEN thrust ball bearing load big or under vibration and impact load, the interference should be increased. With hollow shaft, bearing thin wall bearing box or light alloy, plastic box, also needs to increase the amount of interference. Keep demanding rotates, it should be bearing with high precision, and size precision of the shaft and bearing box, avoid too much interference. If the interference is too big, may make the shaft or the geometry precision of bearing box affect the geometry of bearing ring, therefore the rotating precision of the damage to the bearings. The separation type bearing ( Thrust ball bearing, for instance) Inside and outside the circle is interference fit, TIMKEN thrust ball bearing installation, remove the extremely inconvenient, had better be the one side of the inner and outer circle dynamic cooperation. 一个。 Inner and outer ring, rolling body, to keep any of them are cracks and debris. b。 Inner and outer ring, rolling body any one strip. c。 Raceway surface, guard, significant injury of roller. d。 Maintains a badly worn or loose rivet badly. e. Raceway surface, rust and roller has a scar. f。 Had a remarkable indentation rolling surface, rolling body and make a mark. g。 Inner ring diameter or outer diameter on the creep. h。 Discoloration of overheating. 我。 Sealed bearing grease sealing and dust cover breakage to serious.