| 摘要 |
An oilless stainless needle bearing, it comprises a shaft, cyclinder needles around the shaft and a sleeve covering the needles, the shaft and needles are made of stainless, the sleeve is made from composite material, the composite material comprise fluorocarbon 40-50 %, rare earth 30 %, carbon fiber 5 %, polytetrafluoroethylene 15-25 %. The bearing can be used in the wheel of case, rollel skates, ect. |
