MI Imperial Inner Circle

The MI series is a specialized imperial standard inner ring for needle roller bearings, without rollers/retainers, only designed for high-precision grinding of raceway inner rings. It is compatible with imperial standard needle roller bearings without inner rings (such as the MR series) to compensate for the insufficient hardness/accuracy of the shaft neck. It can be used by pressing on the shaft neck and is suitable for radial support scenarios of imperial standard 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）
MI-445228 69.85 82.55 44.7 0.53 MI Imperial Inner Circle
MI-445232 69.85 82.55 51.05 0.6 MI Imperial Inner Circle
MI-475632 74.612 88.9 51.05 0.73 MI Imperial Inner Circle
MI-485628 76.2 88.9 44.7 0.57 MI Imperial Inner Circle
MI-485632 76.2 88.9 51.05 0.64 MI Imperial Inner Circle
MI-506032 79.375 95.25 51.05 0.87 MI Imperial Inner Circle
MI-526032 82.55 95.25 51.05 0.69 MI Imperial Inner Circle
MI-526432 82.55 101.6 51.05 1.1 MI Imperial Inner Circle
MI-546432 85.725 101.6 51.05 0.93 MI Imperial Inner Circle
MI-566432 88.9 101.6 51.05 0.76 MI Imperial Inner Circle
MI-566832 88.9 107.95 51.05 1.17 MI Imperial Inner Circle
MI-586832 92.075 107.95 51.05 1 MI Imperial Inner Circle
MI-606832 95.25 107.95 51.05 0.81 MI Imperial Inner Circle
MI-607236 95.25 114.3 57.4 1.4 MI Imperial Inner Circle
MI-607240 95.25 114.3 63.88 1.56 MI Imperial Inner Circle
MI-627236 98.425 114.3 57.4 1.15 MI Imperial Inner Circle
MI-627240 98.425 114.3 63.88 1.28 MI Imperial Inner Circle
MI-648032 101.6 127 51.05 1.07 MI Imperial Inner Circle
MI-648036 101.6 127 57.4 2.05 MI Imperial Inner Circle
MI-648040 101.6 127 63.88 2.28 MI Imperial Inner Circle