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)
NKI50/35 50 68 35 61.3 138.3 0.379 NK series
NKI55/25 55 72 25 47.5 103 0.271 NK series
NKI55/35 55 72 35 64.1 151 0.379 NK series
NKI60/25 60 82 25 54.8 116.7 0.393 NK series
NKI60/35 60 82 35 72.1 165.7 0.551 NK series
NKI65/25 65 90 25 54 100 0.466 NK series
NKI65/35 65 90 35 80.4 180.4 0.66 NK series
NKI70/25 70 95 25 59.4 137.3 0.525 NK series
NKI70/35 70 95 35 78.1 194.2 0.738 NK series
NKI75/25 75 105 25 76.4 145.1 0.642 NK series
NKI75/35 75 105 35 102 209.9 0.853 NK series
NKI80/25 80 110 25 77.4 150 0.68 NK series
NKI80/35 80 110 35 103 216.7 0.959 NK series
NKI85/26 85 115 26 79.7 158.9 0.644 NK series
NKI85/36 85 115 36 106.9 230.5 1.05 NK series
NKI90/26 90 120 26 82.5 168.7 0.781 NK series
NKI90/36 90 120 36 109.8 244.2 1.09 NK series
NKI95/26 95 125 26 84.7 177.5 0.819 NK series
NKI95/36 95 125 36 112.8 257.9 1.15 NK series
NKI100/30 100 130 30 105.9 239.3 0.99 NK series