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-121608 19.05 25.4 12.7 0.0227 MI Imperial Inner Circle
MI-121612 19.05 25.4 19.3 0.034 MI Imperial Inner Circle
MI-121616 19.05 25.4 25.65 0.044 MI Imperial Inner Circle
MI-121620 19.05 25.4 31.75 0.0635 MI Imperial Inner Circle
MI-12814848 203.2 234.95 76.58 6.53 MI Imperial Inner Circle
MI-131616 20.638 25.4 25.65 0.034 MI Imperial Inner Circle
MI-141808 22.225 28.575 12.7 0.0227 MI Imperial Inner Circle
MI-141812 22.225 28.575 19.05 0.0363 MI Imperial Inner Circle
MI-141816 22.225 28.575 25.65 0.052 MI Imperial Inner Circle
MI-141820 22.225 28.575 32 0.062 MI Imperial Inner Circle
MI-151816 23.812 28.575 25.65 0.039 MI Imperial Inner Circle
MI-151820 23.812 28.575 32 0.049 MI Imperial Inner Circle
MI-162012 25.4 31.75 19.05 0.0408 MI Imperial Inner Circle
MI-162016 25.4 31.75 25.65 0.052 MI Imperial Inner Circle
MI-162020 25.4 31.75 32 0.072 MI Imperial Inner Circle
MI-182208 28.575 34.925 12.7 0.0318 MI Imperial Inner Circle
MI-182212 28.575 34.925 19.05 0.0454 MI Imperial Inner Circle
MI-182216 28.575 34.925 25.65 0.063 MI Imperial Inner Circle
MI-182220 28.575 34.925 32 0.077 MI Imperial Inner Circle
MI-192420 30.162 38.1 32 0.106 MI Imperial Inner Circle