Identification method of rolling bearing - bearing knowledge

(1) identification of centripetal ball bearings technology normal centripetal ball bearings, bearings and their should be no flaking and severe grinding crack, and in light of a circular arc grooved; All of the ball should maintain a circular, surface without spots, crack and spalling; Cage is not loose, not broken, did not wear out. When using a handheld inner ring, another hand quickly jog outer ring rotates, require smooth rotation, only hear the ball rolling on rolling slight noise, no vibration. Stops should be gradually slow down, stop without any setback, normal to the ball bearing, the gaps between them, the outer ring and rolling body is 0. 005 - 0. 010 mm, when along the radial shaking inside and outside the circle, should feel no clearance. Used in bearing, can use hand inner circle along the axial shaking a few times, when the outer ring and ball has obvious noise, explain the fit clearance more than 0. 3 mm, should not continue to use again. 2 tapered roller bearing identification of bearing after use, should check whether the rolling element and the inner ring raceway is peeling, cage is too loose kuang, inner ring around the edge is complete, if there is a rift outer ring raceway. Inner ring and roller assembly into the outer ring, roller should be falling into a groove in the middle, forward amount not more than 1. 5mm。 And one of them is unqualified, which cannot be used. (3) short spherical roller bearings and cylindrical roller bearing the identification of this kind of bearing outer ring is separable. Normal state, the inner and outer ring raceway and roller should be no broken, pitting and deep grinding crack; Cage should be no deformation and roller can be tucked inside; Fitting clearance of inner and outer ring raceway and roller should not exceed 0. 06mm。 (4) thrust ball bearing identification of normal state, two race should be no flaking injury and serious wear and tear, ball should be no broken and pitting; Cage should be no deformation, no collision with two raceway gaskets, and putting the ball firmly tucked together.