NTN import bearings and knowledge of the maintenance - bearing damage

Not all of the bearing damage can be repaired, but for each damage of bearing considering repair or replace new NTN import bearings before, must be the reason and degree of damage assessment in order to avoid or reduce the damage once again. Bearing damage caused by many reasons, such as improper installation, filth from invading as well or water intrusion is a lot of bearing a common cause of early damage. NTN import bearings and the corresponding analysis of the causes of the common damage can extend the life of the NTN import bearings of preventive measures. Rust and corrosion: contact with water may cause pitting NTN import bearings elements and rust. Current: NTN import bearings turns electricity may result in a groove or notch. Eccentric, eccentric, tilt, or excessive load may result in geometrical stress concentration or surface spalling preventive measures: precise processing imports NTN bearing and gear shoulder for NTN bearing import equipment preventive maintenance, operation and peripheral parts change was removed when the suspension bearing checking, discriminant times demand, in turn, can bearing parts can be used again and record the condition of using good from bad. Second checking NTN import bearings raceway surface, rolling surface and on the surface of the joint venture and confrontation of the wear conditions such as presence of damage and abnormalities in the special track is to examine the raceway surface movement. Discriminant bearing can use again, to ponder on the level of the bearing damage, mechanical function, primacy, operation premise, such as checking cycle back again choice. Checking the effect, if found damage and abnormalities in NTN import bearings, please find out notice according to the bearing damage phenomena, develop countermeasures. In addition, the checking result, there are some defects, if the bearing cannot reoccupy, demand a change in the new NTN import bearings. 1, NTN import bearings maintenance: for as long as possible in good condition to maintain the performance of the bearing was required to maintenance, repair, in order to prevent accident arrangement to ensure the reliability of operation, improve the productivity and economy. To maintain the best conditions of mechanical operation of the corresponding operation standard, on a regular basis. Content includes monitor running status, supplement or replacement of lubricants, remove the check on a regular basis. Points for maintenance operation, the rotation of the NTN import bearings, vibration, temperature, the state of the lubricants and so on. 2, NTN import bearings maintenance: bearing cleaning: removing bearing under repair, the appearance of the first record bearing, confirm the residual stock of lubricant, sampling inspection with lubricant, wash NTN import bearings. Common use gasoline, kerosene as a cleaning agent. Removed the NTN import bearings cleaning, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, make the bearing is not direct contact with dirt from the container. Coarse when cleaning, if rotating the NTN import bearings with dirt, can damage NTN import bearings rolling surface, should be pay attention to. In coarse clean oil, use a brush to remove grease, adhesive, after clean, roughly into fine cleaning). Fine cleaning, NTN import bearings in cleaning oil side spin, side carefully cleaned. In addition, the clean oil is always kept clean. The overhaul and judgment: 3, NTN import bearings in order to judge whether the bearing of the removed can use, check after wash bearing. Check the raceway surface, rolling surface, cooperate with the state, the abrasion of cage, the increase of imports NTN bearing clearance and has nothing to do with dimension precision falling damage, abnormal. Non separation of small ball bearings, with one hand will support level, the inner ring spinning confirm whether smooth outer ring. Separation of tapered roller bearings and bearing, rolling body, the outer ring raceway surface can be respectively. Large NTN import bearings can't rotate with the hand, pay attention to check the rolling element and raceway surface, cage, guard surface appearance, such as the importance of NTN bearing import high must check carefully. 1, work together as much as possible through the axis of the NTN import bearings, which requires the screws evenly symmetry and smooth, by spherical or parallel to the axis force application. 2, the size of the wire should be smooth and uniform, unfavorable impact, this request can use hydraulic or use steady pull or pressure tool, it had to use hammer, also want to through soft without exfoliation metals such as copper sleeve to buffer, tapping force as gently as possible. It is best to use copper or copper hammer hammer. 3, avoid by applying pressure roller, which requires the inner ring (installation Axial circle) When applying pressure through the inner ring and outer ring installation) Through the outer power works. 4, the extent of the drag force continued to be, for example when installing NTN import bearings in the bearing fit into the correct position to stop work, ensure the ring ( Washers) The end face of landing on a hole or shaft shoulder end, neither packed too tight, nor does not reach the designated position.