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-688036 107.95 127 57.4 1.57 MI Imperial Inner Circle
MI-728840 114.3 139.7 63.88 2.58 MI Imperial Inner Circle
MI-728848 114.3 139.7 76.58 3.1 MI Imperial Inner Circle
MI-769248 120.65 146.05 82.55 3.18 MI Imperial Inner Circle
MI-809640 127 152.4 63.88 2.8 MI Imperial Inner Circle
MI-809648 127 152.4 76.58 3.35 MI Imperial Inner Circle
MI-8810440 139.7 165.1 63.88 2.84 MI Imperial Inner Circle
MI-8810448 139.7 165.1 76.58 3.4 MI Imperial Inner Circle
MI-9611648 152.4 184.15 76.58 4.84 MI Imperial Inner Circle