ntn bearing inspection and repair technology and its description within the package

1, bearing inspection and repair technology
1, ntn bearing cleaning
Bearing Maintenance imported under demolition, the first recorded appearance of bearing, lubricant residue confirmation sampling after checking with the lubricant, cleaning bearings. As cleaning agents, general use gasoline, kerosene. Remove the bearings to cleaning, sub-rough cleansing and washing small fine, were in the container, first put metal mesh bottom, so that no direct contact with the container bearing dirt. Precision cleaning, if the bearing rotating with dirt, will it damage the bearing rolling surface, it should be noted. In the crude oil washing, use the brush to remove grease, adhesive material, generally clean and after the transfer sperm washing.
Sperm washing is to clean the oil bearing in the side of rotation, while carefully cleaned. In addition, the clean oil should be kept clean.
2, ntn bearing maintenance and to judge
Dismantled in order to judge whether or not to use bearings, bearings cleaned in check. Carefully check the raceway, rolling surface, with the face of the state, cage wear, bearing clearance and the presence of increased accuracy on the size of the damage down, exception. Non-separation type of small ball bearings, the inner ring with one hand to the level of support, rotating the outer ring to confirm whether the flow.
Tapered roller bearings and other separation-shaped bearings, can be rolling, the outer ring raceway surface were examined.
Large bearings because they can not hand rotation, attention to check the rolling body raceway, cage, ribs and other exterior surfaces, the higher the importance of bearing more to carefully check.
Determine whether reuse is to consider the bearing damage, and mechanical properties, the importance of operating conditions, to decide the next maintenance period. However, if deficiencies are not able to use the following. Renewal must be reasonable bearing.
Inner ring, outer ring, rolling body, the cage there any cracks or gaps.
Rings, ball have broken any.
Raceway, ribs, rolling a significant body relaxation.
Raceway and rolling body has rust, is injured.
Raceway, rolling on the indentation and playing with serious scars.
Diameter of the inner surface or outer diameter surface creep significantly.
Discoloration caused by heat significantly.
Grease sealed bearings, seals, or the dust cover damaged significantly.
2, ntn description within the package
1, miniature bearings: 10 to 15 sets of bearings into a plastic tube, every 5 to 10 plastic tube put into a box (or bag, paper bag).
2, small and medium sized bearing:
Sets of bearing polyethylene film or polyethylene external kraft paper for paper bags; several sets of bearings into a plastic tube (box); single set of bearings with polyethylene film bag, seal the bag after folding or loading into a box.
3, large bearing:
Polyethylene film or polyethylene single set of packing paper, then into a box;
Polyethylene film bag, one set of packaging folding pocket, then into a box;
Single package into a special plastic box;
Wrapping a single set of three packing: inner with polyethylene film or the composite tape, the middle fastening band with the outer layer of plastic with a waterproof penetration.

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