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Determination of NSK Rolling Bearings

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1. The centripetal ball bearing in the NSK bearing is a normal radial ball bearing; the inner and outer ring raceways should have no shedding and severe wear scars; and a circular arc with bright light, all the balls should adhere to Round; no mottled, cracked and detached surface, adhere to the frame is not slack, not broken, not worn. When using one hand inner ring; the other hand agilely pushes the outer ring to rotate; demand rotation is stable; only hear The ball moves slightly on the raceway; there is no oscillation, it should be gradually decelerated when it stops; there is no backward appearance after stopping; the normal centripetal ball bearing; the gap between the inner and outer rings and the roll body is 0. 005-0. 010mm; When swaying the inner and outer rings in the radial direction; should feel the gapless. The used bearing; can hold the inner ring by hand and shake it a few times in the axial direction; when the outer ring and the ball have significant movement; clarify the cooperation gap Beyond 0. 03mm; should not continue to use.
2, NSK imported bearings in the tapered roller bearing after the use of the bearing; should see whether the roll and inner ring raceway can fall off; whether the frame can be too loose; the inner ring before and after the margin can be intact; outer ring raceway Can there be cracks. After the inner ring and roller combination are loaded into the outer ring; the roller should fall into the center of the raceway; the forward displacement does not exceed 1. 5mm. One of them is unqualified;
3. Determination of Spherical Roller Bearings and Short Cylindrical Roller Bearings in NSK Bearings The outer ring of such bearings is separable. Under normal conditions; the inner and outer ring raceways and rollers should be free of breaks, pitting and comparison. Deep wear marks, adhere to the frame should be free of deformation and can gather the roller on the inner ring, the cooperation gap between the inner and outer ring raceway and the roller should not exceed 0. 06mm.
4. When the thrust ball bearing of NSK bearing is judged to be in normal condition; the two raceways should have no falling damage and severe wear; the ball should be free from breakage and pitting, and the frame should be free of deformation; it does not touch the two raceway washers; The balls are firmly gathered together.

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