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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Experience judgment method for rolling imported bearings Experience judgment method for tumbling imported bearings
(1) The radial ball bearing with normal judgment skill of the radial ball bearing; the inner and outer ring raceways should have no falling off and severe wear marks; the imported bearing installation quality index and a bright circular groove, all the balls should be Persevere in round shape; no mottled, cracked and detached surface, adhere to the frame is not slack, not broken, not worn. When using a hand-held inner ring; the other hand agilely pushes the outer ring to rotate; the demand rotates smoothly; To the fine movement of the ball rolling on the raceway; no oscillation, it should be gradually decelerated when it stops; there is no backward appearance after stopping; normal centripetal ball bearing; the gap between the inner and outer rings and the rolling body is 0. 005-0 010mm; when swaying the inner and outer rings in the radial direction; should feel no gaps. The used bearings; can hold the inner ring by hand to shake a few times in the axial direction; when the outer ring and the ball have significant movement; clarify their cooperation The gap has exceeded 0. 03mm; it should not be used continuously. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
(2) The tapered roller bearing is used to determine the correct application and common faults of the FAG bearing after the bearing is applied; whether the roll and inner ring raceway can be peeled off; whether the frame can be too loose; whether the inner ring can be intact; Whether the outer ring raceway has cracks. After the inner ring and roller combination body is installed 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 The outer ring of these bearings is separable. Under normal conditions; the inner and outer ring raceways and rollers should be free of breaks, pitting and deep wear marks. , adhere to the frame should be no 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 determines the normal condition; the two raceways should have no falling damage and severe wear; the new and old code scale standard parameters of the domestic bearing and the imported bearing comparison table (one hundred and twenty-one) should be without crushing and pitting, sticking to the frame There should be no deformation; no contact with the two raceway washers; and the balls are firmly gathered together.
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Source: Bearing network time: 2013-07-14