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KOYO bearings use shorter length, more highly secure, using age longer, lower the sound. Secure lower mechanical bearings easily attack problems, physical wear of bearings more difficult, the greater the cost of repairing its. Thus, necessary after routine maintenance and protection of bearings to reduce the physical wear of the bearing, bearing life cycle maintenance cost reductions and other irregular expenses.
1. start with his fists. Faulty bearing, not eager to start should be examined before and after problems occur through and sight problems. About strangers bearing should also familiarise themselves with the circuit principle and structural characteristics, observe the response rule. Opened before plentiful functions, status, they become familiar with each mechanical part convergence method and relationship to other devices around, in the absence of the Assembly drawing condition, should be opened, sketches, and book of flags.
2. after the first external internal. Should first reflect on the bearings have no cracks, defects, investigations of its maintenance history, length of use, and to reflect on the machine removed before removing the surrounding elements of the problem, identified as problems in talent after opening, or blindly opening may be bearing more of the bad.
3. after the first mechanical machinery if mechanical components after no problems, another reflection of machinery. Reflect on the circuit when the problem. detection equipment to find parts of the problem, after confirming the poor contact problem-free, targeted check on line again with the operation of machinery, in order to avoid miscalculations.
4. after the first static dynamic. In bearing is not running Shi, discriminant bearing button, and Contact Manager, and hot following electric and fuse of black and white, then concluded that problem of locations: power experiment, listen its sound, and measuring parameter, and discriminant problem, eventually for maintenance as in electric idea deficiency phase Shi, if measurement three-phase voltage value cannot with discriminant Shi, on should listen its sound, alone measuring each relative to voltage. party can discriminant which a phase defect.
5. clean maintenance. Pollution, heavier bearing, first of its buttons, wiring, clean the contact points, for a review of external moderation keys can be off the spirit. Many faults were occasioned by the dirt and conductive dust block upon cleanliness problems tend to wipe out.
6. after the first mechanical bearings. Mechanical fault with local rates in the entire problem of bearing a high percentage, so repair machinery can often be more with less
7. before it has been all over the lot. By assembling parts or other bearing defects, problems, common recurrent problems about 50%, bearing extraordinary problems for software problems, to rely on the experience and the instruments to measure and maintenance
8. behind the perimeter. Don't rush to change the damaged machinery, bearings outside the recognized circuit properly, thinking change damaged parts of the machinery.
9. after the first direct exchange. Overhaul. static task must reflect on the DC circuit, then AC circuit dynamic task.
10. the problem first and then debug. Try on apoptosis and bearing with both problems, should the removal of defects, for debugging, debugging required in machine speed lines under the premise.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NNU4920 NTN | 100 | 140 | 40 |
| NN3092 NTN | 460 | 680 | 163 |