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）
IR9010030 90 100 30 0.355 IR inner circle
IR9010036 90 100 36 0.415 IR inner circle
IR9010535 90 105 35 0.61 IR inner circle
IR9010546 90 105 46 0.8 IR inner circle
IR9010563 90 105 63 1.1 IR inner circle
IR9510526 95 105 26 0.315 IR inner circle
IR9510536 95 105 36 0.43 IR inner circle
IR9511035 95 110 35 0.65 IR inner circle
IR9511046 95 110 46 0.85 IR inner circle
IR9511063 95 110 63 1.16 IR inner circle
IR10011030 100 110 30 0.38 IR inner circle
IR10011040 100 110 40 0.5 IR inner circle
IR10011532 100 115 32 0.62 IR inner circle
IR10011540 100 115 40 0.7 IR inner circle
IR11012030 110 120 30 0.41 IR inner circle
IR11012540 110 125 40 0.84 IR inner circle
IR12013030 120 130 30 0.45 IR inner circle
IR12013545 120 135 45 1.03 IR inner circle
IR13014535 130 145 35 0.86 IR inner circle
IR13015050 130 150 50 1.67 IR inner circle