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）
NK5/10 5 10 10 2.42 1.95 0.0034 NK series
NK5/12 5 10 12 3.08 2.66 0.0042 NK series
NK6/10 6 12 10 2.7 2.32 0.0053 NK series
NK6/12 6 12 12 3.44 3.17 0.0064 NK series
NK7/10 7 14 10 3.6 2.96 0.0069 NK series
NK7/12 7 14 12 4.61 4.05 0.0083 NK series
NK8/12 8 15 12 5.1 4.7 0.009 NK series
NK8/16 8 15 16 7.1 7.3 0.013 NK series
NK9/12 9 16 12 5.5 5.3 0.01 NK series
NK9/16 9 16 16 7.6 8.2 0.0132 NK series
NK10/12 10 17 12 5.9 6 0.0107 NK series
NK10/16 10 17 16 8.2 9.2 0.0143 NK series
NK12/12 12 19 12 6.6 7.3 0.0122 NK series
NK12/16 12 19 16 9.2 11.2 0.0163 NK series
NK122012 12 20 12 10.9 13.2 0.017 NK series
NK14/16 14 22 16 11.8 13.7 0.021 NK series
NK14/20 14 22 20 14.8 18.5 0.0265 NK series
NK15/16 15 23 16 12.4 14.9 0.0225 NK series
NK15/20 15 23 20 15.6 20.2 0.028 NK series
NK16/16 16 24 16 12.3 15.1 0.023 NK series