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We usually refers to the precision of the bearings after installation, because we know that improper installation is easy to cause the lack of precision of the bearing, at the time of installation to do a couple of several points, we can ensure the accuracy of the bearings: bearings under repair is removed, first recorded appearance of the bearing, confirm that the residual amount of lubricant, sampled after checking the lubricant, wash bearings. As a cleaning agent, ordinary gasoline, kerosene. Removed bearing wash, heavy wash and light cleaning, placed in a container, placed on the metal bottom of the net, bearing no direct contact with the container of dirt. Coarse cleaning, if you rotate the bearing with dirt, scroll bars can damage the bearing surfaces, should be noted. Coarse cleaning oil, use the brush to clear of grease, adhesive, after largely clean, fine wash. Fine washing, is to rotate the bearing in cleaning oil side, careful cleaning. In addition, cleaning oils to keep clean.
Bearing maintenance and judgment: in order to determine whether removing bearings can be used to check after you wash the bearing. Checks on Raceway surface, scroll, status of the mating surfaces, wear of the cage, the increased clearance of rolling bearings and has nothing to do with dimensional accuracy to decrease injury exception. Non-separation of small ball bearings, the inner ring with one hand supporting level, rotate the outer ring to confirm fluency.
Once the spindle Assembly needs to check the running accuracy of the bearing. Most common method is the checking method for the spindle of machine tool bearings. Appropriate measurements on the surface of the shaft radial and axial runout. But practice shows the spindle on the surface to detect and eccentricity of the ellipse are generally large, it is difficult to get inside of eccentricity of bearing or spindle.
Detection of the running accuracy of the bearing there is a better way, is a precise grinding ball soldered to connectors mounted on the shaft seat. Trace indicator or similar meter with equal precision measurement contacts on to the ball. Ball joint in the shaft head, its fixation should be allow to gently hit ball after ball to move perpendicular to the main axis. Minimum reading is obtained when the spindle rotation no-load radial precision spindle bearings. Installed in the horizontal position the indicator reading is on the ball spindle axial runout values. If you are rotating inner ring raceway of deviation from the centerline of the shaft, then blink twice times the eccentricity of the shaft.
Method for detecting the running accuracy of the bearing using effectively and accurately in order to accurately test the running accuracy of the bearing, in order to effectively improve the running accuracy of the bearing, increase the rigidity of bearing's combination, reduce the axial vibration and noise when in operation, improving the life of the rolling bearing.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7213CTYNDBLP4 NSK | 65 | 120 | 23 |
| 7212ATYNDBLP4 NSK | 60 | 110 | 22 |