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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>TN import bearing discriminating specifications and maintenance conditions Discriminating specifications and maintenance conditions of TN imported bearings
When repairing the NTN bearing under disassembly; firstly record the appearance of the bearing; recognize the residual amount of lubricant; after sampling; remove the NTN bearing. The scavenger is used throughout the gasoline and fire oil. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Removal of the removed NTN bearing; coarse and fine washing; first place the metal mesh in the container; make the bearing not directly touch the dirt inside the container. When rough washing; if the bearing rotates with dirt; it will damage NTN Bearing rolling surface; should pay attention to. In the rough washing oil; use the brush to go out grease, adhesive; after cleansing; turn into fine washing.
Fine washing; the NTN bearing is rotated while removing the oil; while carefully cleaning. Others; the oil should also be replaced frequently to keep clean.
Inspection and discrimination of NTN bearing can be used when the NTN bearing can be reused; check after the bearing is removed; carefully check the raceway surface, the rolling surface, the condition of the cooperation surface, the wear condition of the cage, whether the NTN bearing clearance can Adding and having damage or abnormality that affects the accuracy of scale reduction, non-detached small ball bearings, etc.; use one-handed flat end inner ring; rotating outer ring acknowledges whether it can be smooth.
Tapered roller bearings and other separate bearings; can be viewed from the rolling surface of the roll and outer ring.
Large bearings can not be rotated by hand; pay attention to the appearance of the rolling body, raceway surface, cage, ribs, etc. The higher the importance of NTN bearings, the more careful inspection.
It is judged whether the NTN bearing can be used again; it should be determined according to the damage degree, mechanical properties, importance, working conditions, viewing period, etc. of the bearing. However, if the following defects are found during the inspection; the bearing cannot be used continuously; NTN bearing.
(a) There is a crack or a gap in the inner ring, the outer ring, the roll body and the cage.
(b) One of the ferrules and the rolling body is cracked.
(c) Significant abrasions on the rolling surface, ribs and roll.
(d) The cage is worn significantly; or the rivet is significantly loose.
(e) There are rust or scars on the raceway surface and the roll body.
(f) There are severe indentations or bumps on the raceway surface and the roll body.
(g) There is significant creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring.
(h) Significant discoloration due to overheating.
(i) NTN bearings sealed with grease; seals or dust caps are severely damaged.
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Source: China Bearing Network Time: 2018-01-05