Universal K-series needle roller assembly

The universal K series needle roller assembly is a centripetal needle roller unit (commonly known as "chicken cage bearing", complying with JB/T 7918 standard) consisting only of needle rollers and retaining frames without inner/outer rings. It relies on quenched and finely ground shaft necks and bearing seat holes as raceways, with extremely compact radial space and strong load-bearing capacity per unit area. It is suitable for pure radial heavy load and thin design, and is widely used in space sensitive transmission scenarios such as gearboxes, motors, and agricultural machinery.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
K14X18X15 14 18 15 9.5 12.3 0.006 Universal K-series needle roller assembly
K14X18X16 14 18 16 9.75 12.4 0.005 Universal K-series needle roller assembly
K14X18X17 14 18 17 10.8 14.4 0.0073 Universal K-series needle roller assembly
K14X18X39ZW 14 18 39 18.8 28.9 0.008 Universal K-series needle roller assembly
K14X19X10 14 19 10 7.13 7.18 0.018 Universal K-series needle roller assembly
K14X19X13 14 19 13 8.95 9.65 0.0059 Universal K-series needle roller assembly
K14X19X16 14 19 16 11.1 12.6 0.008 Universal K-series needle roller assembly
K14X19X18 14 19 18 12.4 14.7 0.0094 Universal K-series needle roller assembly
K14X20X12 14 20 12 10.3 10.6 0.0105 Universal K-series needle roller assembly
K14X20X17 14 20 17 13.3 14.4 0.0085 Universal K-series needle roller assembly
K15X18X14 15 18 14 7.85 11.6 0.0124 Universal K-series needle roller assembly
K15X18X17 15 18 17 8 12.1 0.006 Universal K-series needle roller assembly
K15X19X9 15 19 9 6.12 6.95 0.0046 Universal K-series needle roller assembly
K15X19X10 15 19 10 7.5 9.2 0.0044 Universal K-series needle roller assembly
K15X19X11 15 19 11 6.85 8.04 0.005 Universal K-series needle roller assembly
K15X19X13 15 19 13 8.5 10.9 0.0055 Universal K-series needle roller assembly
K15X19X17 15 19 17 11.3 15.6 0.007 Universal K-series needle roller assembly
K15X19X18 15 19 18 11.5 15.6 0.0095 Universal K-series needle roller assembly
K15X19X24ZW 15 19 24 14.1 20.4 0.0087 Universal K-series needle roller assembly
K15X20X10 15 20 10 7.58 7.92 0.013 Universal K-series needle roller assembly