The inner ring is used as the rollway of roller bearing. It is the common free gap when it is used in combinationwith needle roller bearing and has the changeability. Series IR inner ring is machined with precisionmachining after heat treatment. Series LR inner ring is ground after heat treatment. The chamfer in end face isnot ground. The common and high-precision inner rings can be produced in our company. All inch-system inner ringscan be provided.
Needle Roller Bearing