⑴ radial ball bearings to identify the normal state of the radial ball bearings, the inner race, outer raceway should be free of flaking and serious wear marks, and a bright arc groove; all the ball should be kept round, the surface No spots, cracks and peeling; cage is not loose, not broken, not worn. When one hand holds the inner ring and the other hand swiftly nudges the outer ring to rotate, it requires a smooth rotation and only the slight noise of rolling balls on the raceway is heard without vibration; when it is stopped, it should gradually decelerate and there is no reverse , Normal radial ball bearings, the gap between the inner and outer rings and the rolling elements of 0.005-0.010mm, when shaking the inner and outer rings in the radial direction, should feel no gap. Used bearings, the inner ring can be hand in the axial shaking a few times, when the outer ring and the ball has a clear sound, indicating that the gap with more than 0.03mm, should not continue to use. ⑵ identification of tapered roller bearings After the use of bearings, the inner race should check whether the rolling off the raceway, the cage is too loose Kuang, before and after the inner ring is complete, outer ring raceway cracks. After the inner ring and the roller assembly into the outer ring, the roller should fall into the middle of the raceway, the amount of advance not more than 1.5mm. One of them is unqualified, which means it can not be used. ⑶ self-aligning roller bearings and cylindrical roller bearings identification of such bearings outer ring is detachable. Normal state, the inner and outer raceway and roller should be no broken, pitting and deeper wear marks; cage should be no deformation and the roller can be folded in the inner ring; inner and outer raceway and roll Children with the gap should not exceed 0.06mm. ⑷ thrust ball bearings identification normal state, the two raceways should be no peeling injury and serious wear, the ball should not be broken and pitting; cage should be no distortion, not with the two raceway washer collision, and the ball firmly Shoulong Together
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