Needle roller bearing inner rings are available as separate components. They are usually used in combination with needle roller and cage assemblies or drawn cup needle roller bearings in applications where the shaft surface cannot be hardened or ground. The inner rings of the IR series are standard on JOJI needle roller bearings.

• Complete interchangeability of inner rings
• Standard JOJI inner rings used in needle roller bearings
• Can withstand bi-directional axial displacement