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Lubrication is very important, not only against the bearings, bearings for all. But note that the bearing should not be adding too much grease. Then there is the replacement of lubricants. After purging old engine oil, the oil lubricated bearings, if possible, should be poured into the fresh oil and let the machine at low speed of rotation for a few minutes. Oil collecting residue as possible contaminants, and then purging these oils. Use grease lubricated bearings when replacing the grease, used by Joe in addition should avoid contact with cotton to any parts of the bearing. Fiber because these residues may wedge between rolling and cause damage, especially small bearing application should pay attention to this issue.
When you check the bearings, don't let the bearing environment exposed to contaminants or moisture. If the work is broken, had his paper should be plastic or similar material machines. If checks are performed without removal may case cleaning exposed bearings, to coating with a brush dipped in oil solvent, and then dry with a lint free cloth or compressed air dryer (be careful not to allow the bearing components starting rotation). To a small mirror and a similar probe of the kind used by dentists to check the bearing track surface, retainer and beads. Could not be cleaned and sealed or dust ball bearings outside; you only wipe the external surface. If the bearing is damaged, need to replace. Periodic replacement than during the maintenance period of downtime due to a corrupt array selected loss come more suddenly shut down.
Failure means the bearing surface of contact fatigue results from alternating stress the role of failures. Contact fatigue spalling in bearing surface, often accompanied by fatigue cracks, contact surface the following maximum alternating shear stress in the first place, and extending to the surface to form a variety of Flake shapes, such as point-like pitting corrosion or pitting flaking, spalling of shallow Flake into small flakes.
Wear failure means relative to the surface of sliding friction causes it to work constantly wear and failure of the metallization. Continued gradual damage bearing parts caused by wear, and eventually led to the loss of precision of bearing size and other related issues. Wear may affect the shape change, clearance increased and morphological changes on the surface, might affect the lubricants or it reaches a certain degree of contamination caused by the complete loss of lubrication function, thus loss of running accuracy of the bearing and does not operate properly. Wear failure is one of the common failure modes of all kinds of bearings, classified according to the wear is usually in the form of the most common abrasive and adhesive wear of wear.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7202A5TYNDBLP4 NSK | 15 | 35 | 11 |
| 7202CTYNDBLP4 NSK | 15 | 35 | 11 |