Identification of INA bearings,the technical condition of the normal centripetal ball bearing, its inner and outer ring raceway should be no spalling and serious wear marks, and a bright a circular arc groove; all the ball should remain round, the surface without spots, cracks and spalling; keep frame not loose, not broken, not worn through.Identification of INA bearings, when holding the inner ring with one hand, the other hand quickly push the outer ring rotation, requires smooth rotation, only hear the ball rolling on the raceway a slight sound, no vibration;
Stop should gradually decelerate, no backward phenomenon after stopping, the normal centripetal ball bearing, its inner and outer ring and rolling body clearance between 0.005-0.010mm, when shaking the inner and outer ring along the radial direction, should feel no clearance.You can hold the inner ring by hand along the axial shaking a few times, when the outer ring and ball have obvious sound, indicating that its fit clearance exceeds 0.03mm, should not continue to use.
Identification of INA bearings,INA bearing after use, should check whether the rolling body and inner ring raceway is spalling, keep frame is too loose, inner ring before and after the edge is complete, outer ring raceway is cracked. The inner ring and roller combination into the outer ring, the roller should fall into the middle of the raceway, the amount of forward movement does not exceed 1.5mm. one of them is not qualified, that is, can not be used.
Identification of INA bearings.This kind of INA bearing outer ring is separable.Identification of INA bearings, in normal condition, the inner and outer ring raceway and roller should be no broken, pockmark and deeper wear marks; keep frame should be no deformation and can collect the roller on the inner ring; inner and outer ring raceway and roller fit clearance should not exceed 0.06mm.
Identification of INA bearings.In normal condition, the two raceways should have no spalling injury and serious wear, and the ball should have no broken and pockmark; the cage should have no deformation, no touching with the two raceway gaskets, and the ball is firmly gathered together.
In China’s production of standard KOYO bearings, some single-row radial ball bearings and short cylindrical roller bearings have low noise varieties for motor KOYO bearing use. Among them, the ball KOYO bearing from the inner diameter φ2.5mm to φ60mm there are several varieties with Zl, Z2 and Z3 three suffixes, respectively, corresponding to three different low noise requirements, while the roller KOYO bearing from N309 type to N322 type a total of eight models also have low noise standard manufacturing varieties. These KOYO bearings can be fully applicable to other low-noise requirements of the machine, and inexpensive, such as in the type and size can meet the requirements, try to use these two types of low-noise.