Which bearing closure are best?

How to choose the bearing closures type?
Which bearing Closures are the best?
It depends on the bearing application and ambient, the enviroment.
Hope the below table can help you!
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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