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Removing the lower bearing overhaul, the first recorded cylindrical roller bearings appearance, confirm the remaining amount of lubricant, lubricant sampling inspection, wash bearings. As a cleaning agent, general use gasoline, kerosene.
Remove the bearing cleaning stars rough cleaning and seminiferous wash, respectively, in the container, first put the metal mesh on the bottom, so that the bearing does not directly contact the container and the dirt. Coarse cleaning, if the bearing is rotating with dirt, damage cylindrical roller bearings rolling surface, should be noted. Crude oil cleaning, use a brush to remove grease, adhesive material, generally clean, transferred sperm washing.
Sperm washing is the bearing while rotating in the cleaning oil, clean it thoroughly. In addition, cleaning the oil should be kept clean.
2, cylindrical roller bearing repair and judgments
In order to determine removed cylindrical roller bearings can then use to cylindrical roller bearings, cleaned inspection, carefully check the raceway, turn the surface, with the surface state, cage wear, bearing clearance increases and the presence of dimensional accuracy decreased damage exception. Non-separable ball bearings, the inner ring with one hand, the level of support, rotating outer ring to confirm whether smooth.
Tapered roller bearings and other separation-shaped cylindrical roller bearings, the rotating body, the outer ring raceway surface were examined.
The large bearing can not rotate by hand, pay attention to check the appearance of the rotating body, raceways and cage wall surface, the importance of bearing the higher the greater the need for careful inspection.
The reusable judgment, consider the degree of injury, mechanical properties, the importance of operating conditions cylindrical roller bearings, until the next maintenance period. However, if the following defects can no longer use, and must be replaced with new bearings:
(A) the inner ring, outer ring, the rotational body, a holder of any cracks or notches;
(B) rings, rotating body fracture in any one;
(C) raceway, ribs, rotating body significantly hurt the card;
(D) the holder wear significantly, or a significant relaxation of the rivet;
(E) the raceway, a rotating body rust injury;
(F) to raceway, turning serious dents and hit marks on the body;
(G) the inner ring inner diameter surface or outer diameter surface of the creep;
(H) discoloration caused by heat;
(I) Grease cylindrical roller bearings, seals or dust cover damage.
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