Rolling experience identification method
⑴ normal radial ball bearings radial ball bearings to identify the state of technology, the inner and outer ring raceway should be no peeling and severe wear scar, and was a bright arc groove; all of the balls should be kept round surface no spots, cracks and flaking; holder not loose, not broken, not worn. When the inner ring with one hand, the other hand quickly nudge the outer ring rotates, for a smooth rotation, only to hear the sound of the ball raceway in minor, non-vibration; should be stopped gradually slow down, no setbacks after stopping normal to Heart ball bearings, inner space, outer ring and rolling element between the 0.005-0.010mm, when shaking radially inner and outer rings, should feel no gap. Used bearings, you can hand hold the inner ring axially shaking a few times, when the outer ring and the balls have obvious sound, indicating that with the gap exceeds 0.03mm, should not continue to be used.
After ⑵ Identification of tapered roller bearings bearings, check the rolling element and the inner ring raceway whether there is peeling, the holder if it is too Songkuang, around the inner edge is complete, the outer ring raceway track whether there are cracks. After the inner and outer ring roller assembly is loaded roller raceways should fall into the middle, forward does not exceed 1.5mm. Where there is a failure, that can not be used.
Identification ⑶ Spherical roller bearings and cylindrical roller bearings of this type of bearing outer ring is separable. When the normal state, the outer ring raceways and rollers should be no breaking, pitting and deep wear scar; cage should be no deformation and can roller collapsed on the inner ring; inner and outer raceway and roller child with the gap should not exceed 0.06mm.
⑷ thrust ball bearings identified a normal state, two raceway spalling should be no serious injury and wear and tear, the ball should be no broken and pitting; cage should be no distortion, no washer and two races collide, and the ball firmly Shoulong together.
