IR inner circle

The IR series is a standard inner ring for needle roller bearings, without rollers or retainers. It is only used for high-precision grinding of the raceway inner ring and is suitable for use with various types of needle roller bearings without inner rings. It compensates for the problem of insufficient hardness/accuracy of the shaft neck, improves the overall bearing capacity and service life of the bearing, and can be press fit on the shaft neck for use. It is suitable for radial support scenarios of general industrial equipment.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
IR13015067 130 150 67 2.25 IR inner circle
IR14015535 140 155 35 0.93 IR inner circle
IR14016050 140 160 50 1.79 IR inner circle
IR15016540 150 165 40 1.13 IR inner circle
IR16017540 160 175 40 1.2 IR inner circle
IR16018060 160 180 60 2.5 IR inner circle