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）
IR91211 9 12 11 0.0031 IR inner circle
IR91212 9 12 12 0.0045 IR inner circle
IR91216 9 12 16 0.006 IR inner circle
IR101312.5 10 13 12.5 0.0052 IR inner circle
IR101412 10 14 12 0.007 IR inner circle
IR101412.5 10 14 12.5 0.0072 IR inner circle
IR101413 10 14 13 0.0075 IR inner circle
IRZ101414 10 14 14 0.008 IR inner circle
IR101416 10 14 16 0.009 IR inner circle
IR101416.5 10 14 16.5 0.0096 IR inner circle
IR101420 10 14 20 0.0115 IR inner circle
IR101420.5 10 14 20.5 0.0119 IR inner circle
IR101510.5 10 15 10.5 0.0079 IR inner circle
IR101515.5 10 15 15.5 0.0117 IR inner circle
IR101520.5 10 15 20.5 0.0155 IR inner circle
IR101525.5 10 15 25.5 0.0193 IR inner circle
IR101616 10 16 16 0.015 IR inner circle
IR121512.5 12 15 12.5 0.0061 IR inner circle
IR121516 12 15 16 0.0078 IR inner circle
IR121516.5 12 15 16.5 0.0081 IR inner circle