冲压外圈满装滚针轴承，B系列DrawnCupNeedleRollerBearings,Thiskindbearingc***istsoffullofneedlesextendingtoouterraceway,thusbearinghighload.Itisappliedtothesituationwherethedevicesmountedwithneedlerollerbearingsruninswingingoperationwithlowandmiddlespeed.Sincethebearingsarefedwithlubricatinggreasewhenaredelivered,itisunnecessarytoaddthelubricatinggreaseinassembling)