The structure of bearings consists of open and close, and the close type might be equipped with dustproof on single side or both sides(Z,ZZ);with non-contact sealing rign on single side or both sides (RZ,2RZ), and with contact sealing ring on single side or both sides (RS, 2RS).
Before ex works, the product is filled properly with lubricant oil and grease. You may use it immediately after unpacking and cleaning is unnecessary. It is suitable for light to middle load, low to middle speed and working temperature -20¡ãC to 100¡ãC. For any special case, please note the usage and brand of grease on your order.
The common brand and performance of grease is shown on table.