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Burns refers to sliding contact bearings the bearing area of friction friction and surface roughening and not significantly increased dramatically and continue to operate. Reason: burn is due to insufficient lubrication of the bearing resulting in increased friction and temperature rise, making lubricants to thin oil film to thin, which in turn increases the friction of the vicious circle of instantaneous, there are generally two situations, namely:
1, axle bearing temperature after starting before reaching a stable value;
2, suddenly occur after the bearing has been working for some time.
The former because the lubrication itself poses a problem, the latter because of the lubrication system failure, or lubrication conditions have changed.
Bearing the burned parts of the display characteristics for the burn surface roughening, often burning metal color. Tend to have higher temperatures threatened before the burn occurs, but what will happen when, can't be controlled. Cases where they are various roller bearings between ribs and roller end faces, as well as between the cage and rolling elements.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7206CDF NSK | 30 | 62 | 16 |
| 7206BDF NSK | 30 | 62 | 16 |