This kind of bearings has injected anti-rust, lubrication lithium base fat in the factory.
After greasing, it can work effective in a long time without add grease again. So, it always used in generators, automobiles, tractors, air conditioning, fan and other places which have the special requirements about bearing’s noise of vibration.1.Cage type: ZZ
2. Grease sealing: good
3. Dust-proof: good
4. Water resistance: unsuitable
5. Materials: Iron, carbon steel, bearing steel, stainless steel etc.
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