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Bearing with the role is such that the stationary bearing ring and the rotating ring and the stationary portion of the mounting portion (usually the bearing housing) and a rotating part (usually axis) consolidation together to transfer loads and limited movement, thereby to achieve in the state of rotation systems for the basic tasks of the position of the stationary system.
Careful observation of the bearing running track will be learned only bear radial load to bear large axial load to withstand the torque load, or extreme rigidity inequality in the bearing housing. You can check bearings plus the unexpected load and installation error is too large, and investigated for the cause of bearing damage clue. The trajectory of the bearings produced under different load conditions. The running track of the bearing as the running track of the outer race of bearings used in the inner ring rotating load plus radial load correctly.
1. Law as much as possible the use of special instruments to measure;
2 hand-push measurement requires measurements have higher measurement skills. This method is the measurement error is large, especially the clearance at the edge of the state, easily lead to error, should prevail instruments to measure;
Feeler, standard provisions should be operating, may not use the roller feeler on rolling past measurements;
4. Measurement process should be to ensure that the ball fall into the ditch; measurement of the closed type bearings before the closure; the Dutch instrument is used, the measured value should also be less load due to the amount of the increase in clearance.
Requirements for each column clearance qualified for multi-row bearings, take the the column clearance arithmetic average radial clearance of the bearing.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7000CDB NSK | 10 | 26 | 8 |
| 7015A NSK | 75 | 115 | 20 |