Needle ring IR 7X10X12

SBF─IR inner ring is processed by heat treatment and precision machining. The dimensional tolerance and geometric accuracy meet national standards. The ends of the raceway surface generally have guide chamfers for installation. It is suitable for occasions where the shaft cannot be heat treated and used directly as raceway. The inner ring can achieve normal working clearance when using with needle roller bearings without inner ring made in SBF. Main structure types SBF─IR inner ring is processed by heat treatment and precision machining. The dimensional tolerance and geometric accuracy meet national standards. The ends of the raceway surface generally have guide chamfers for installation. It is suitable for occasions where the shaft cannot be heat treated and used directly as raceway. The inner ring can achieve normal working clearance when using with needle roller bearings without inner ring made in SBF. The tolerance value of the LR inner ring is bigger than that of the IR inner ring. The end face is not ground, and the price is also low. It is often used with the drawn cup needle roller bearing made in SBF.