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-263216 41.275 50.8 25.65 0.134 MI Imperial Inner Circle
MI-263220 41.275 50.8 32 0.17 MI Imperial Inner Circle
MI-273216 42.682 50.8 25.65 0.117 MI Imperial Inner Circle
MI-273220 42.682 50.8 32 0.146 MI Imperial Inner Circle
MI-283624 44.45 57.15 38.35 0.31 MI Imperial Inner Circle
MI-283628 44.45 57.15 44.7 0.345 MI Imperial Inner Circle
MI-314024 49.212 63.5 38.35 0.376 MI Imperial Inner Circle
MI-314028 49.212 63.5 44.7 0.442 MI Imperial Inner Circle
MI-324024 50.8 63.5 38.35 0.34 MI Imperial Inner Circle
MI-324028 50.8 63.5 44.7 0.39 MI Imperial Inner Circle
MI-354428 55.562 69.85 44.7 0.49 MI Imperial Inner Circle
MI-364024 57.15 63.5 38.1 0.1714 MI Imperial Inner Circle
MI-364416 57.15 69.85 25.65 0.251 MI Imperial Inner Circle
MI-364424 57.15 69.85 38.35 0.38 MI Imperial Inner Circle
MI-364428 57.15 69.85 44.7 0.44 MI Imperial Inner Circle
MI-384828 60.325 76.2 44.7 0.599 MI Imperial Inner Circle
MI-404824 63.5 76.2 38.35 0.42 MI Imperial Inner Circle
MI-404828 63.5 76.2 44.7 0.48 MI Imperial Inner Circle
MI-425228 66.675 82.55 44.7 0.53 MI Imperial Inner Circle
MI-425232 66.675 82.55 51.05 0.75 MI Imperial Inner Circle