Date: 2013-08-20

Identification of a rolling bearing

⑴ Identification radial ball bearings
Technical state of normal radial ball bearings, the inner and outer ring raceway should be no spalling and severe wear scar, and was shining a circular groove; All balls should be kept round, the surface without spots, cracks and peeling; cage not loose, not broken, not worn. When using a hand-held inner ring, one hand gently push the outer ring rotates rapidly, requiring smooth rotation, only to hear the balls raceway slight noise, no vibration; stops should gradually slow down, stop after no backsliding , the normal to the Heart ball bearing, the inner and outer rings and the rolling gap between the 0.005-0.010mm, when the radially inner and outer rings shaking, should feel no gap. Used bearings, you can hand hold the inner ring axially shaking several times, when the outer ring and ball obviously sound, with the gap on its more than 0.03mm, should not continue to use.
⑵ identification of tapered roller bearings
Bearings should be checked after the rolling element and the inner ring raceway spalling if the cage is too Songkuang, front and rear edges of the inner ring is complete, the outer ring raceway for cracks. Inner and outer roller assembly mounted after the roller raceway should fall into the middle, forward does not exceed 1.5mm. Where there is a failure, that can not be used.
⑶ spherical roller bearings and cylindrical roller bearings identification
Outer rings of these bearings are separable. Normal state, the inner, outer ring raceway and the roller should be no broken, deep pitting and wear scar; cage should be no deformation and can roller folds of the inner ring; inner and outer ring raceway and rolling son with the gap should not exceed 0.06mm.
⑷ thrust ball bearing identification
Normal state, two raceway spalling should be no serious injuries and wear and tear, the ball should be no crushing and pitting; cage should be no distortion, no collide with two raceway washers and ball firmly folded together.

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