NK series

The NK series is a single row light series needle roller bearing without an inner ring and a dual gear edge solid ring. The core unit is composed of a dual gear edge solid outer ring and a needle roller holder assembly. The design without an inner ring makes the radial section extremely compact. It relies on a quenched and finely ground journal as the inner raceway and only bears pure radial loads. It is suitable for general industrial scenarios with medium low speed, medium heavy load, and limited radial installation space. It is a mainstream radial support accessory for motors, transmissions, automation equipment, light industrial machinery, etc.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
NKI100/40 100 130 40 133.4 323.6 1.34 NK series
NKI110/40 110 140 40 113 268 1.49 NK series
NKI120/40 120 150 40 116 283 1.57 NK series
NKI130/32 130 170 32 111 238 1.9 NK series
NKI130/42 130 170 42 153 360 2.54 NK series
NKI140/32 140 180 32 114 252 2.04 NK series
NKI140/42 140 180 42 156 380 2.69 NK series
NKI150/32 150 190 32 117 265 2.32 NK series
NKI150/42 150 190 42 160 400 2.84 NK series