Standard method for overhaul of TIMKEN bearing, damage, and cleaning and maintenance

Due to the bearing through antirust processing and packaging, so do not open the packing before installation. In addition, the coating on bearing anti-rust oil has good lubrication performance, for general purpose or filling grease TIMKEN bearings, bearing can not directly use cleaning. But for the instrument bearing or bearing for high-speed rotation, the application of clean cleaning oil washed away anti-rust oil, when the bearing is easy to rust, not for a long time. 2, shaft and the inspection cleaning bearing shell and shell, confirm no scar or mechanical processing of burr. Shell has absolutely can not have abrasives ( SiC and Al2O3, etc. ) Sand, scraps, etc. Next inspection shaft and shell size, shape and machining quality are consistent with those drawings. Installation method of TIMKEN bearings, bearing fit, condition, structure, general, due to many as the axis of rotation, so the inner ring need interference fit. Cylindrical hole bearing, multi-purpose press pressure into, or multi-purpose hot charging method. Taper hole, installed directly on the taper shaft, or use the socket installation. When installed on the shell, clearance fit more commonly, outer ring have surplus quantity, usually use the pressure into the press and or have shrink fit method of cooling after installation. Use dry ice as coolant, shrink fit installation, the moisture in the air condenses on the surface of bearing. So, need a good rust prevention measures. Whether can be used to judge, is to consider the TIMKEN bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. However, if you have the following defects can't use, must be replaced new SKF deep groove ball bearings: ( a) Inner ring and outer ring, rolling element and cage have crack or gap on any one; ( b) On any one ring, rolling body fracture; ( c) Raceway surface, guard, with significant roller card injury; ( d) Maintains a significant wear and tear, or rivet significant relaxation; ( e) Raceway surface, there are rust on rolling element and injury; ( f) On the raceway surface, rolling body has serious indentation and mark; ( g) Inner ring diameter or outer diameter surface has obvious creep; ( h) Discoloration caused by thermal obvious; ( i) The TIMKEN bearing grease sealed, sealing ring or dust cover breakage is obvious.