Which bearing Closures are the best?
It depends on the bearing application and ambient, the enviroment.
| Considering point | Open | Shield(ZZ) | Seal(RS) |
|---|---|---|---|
| Closure Materia | NA | Steel | Rubber |
| Cotaminate protection | No | Good | Very good |
| Protection from moisture and dirt | No | Good | Very Good |
| Retain lubrication | No | Good | Very Good |
| Ipact by speed | No | No | Yes |
| Water proof | No | Good | Very Good |
| Withstand higher temperature | Higher | Higher | Lower |
| Increasing the temperature | No | No | Yes |
by Maygan Yang
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