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）
K12X15X14 12 15 14 6.2 8.01 0.0023 Universal K-series needle roller assembly
K12X15X20ZW 12 15 20 8.4 12.2 0.0038 Universal K-series needle roller assembly
K12X16X8 12 16 8 4.85 4.9 0.005 Universal K-series needle roller assembly
K12X16X10 12 16 10 6.4 7.2 0.0034 Universal K-series needle roller assembly
K12X16X13 12 16 13 8 9.4 0.0037 Universal K-series needle roller assembly
K12X16X18 12 16 18 9.79 11.9 0.0055 Universal K-series needle roller assembly
K12X17X10 12 17 10 6.17 5.74 0.007 Universal K-series needle roller assembly
K12X17X13 12 17 13 9.6 10.4 0.0051 Universal K-series needle roller assembly
K12X18X12 12 18 12 10 9.9 0.0049 Universal K-series needle roller assembly
K12X18X20 12 18 20 13.7 14.4 0.006 Universal K-series needle roller assembly
K13X17X10 13 17 10 5.99 6.5 0.0132 Universal K-series needle roller assembly
K13X18X15 13 18 15 9.66 10.4 0.0043 Universal K-series needle roller assembly
K13X18X16 13 18 16 10.3 11.4 0.0082 Universal K-series needle roller assembly
K14X17X10 14 17 10 5.3 7.1 0.0087 Universal K-series needle roller assembly
K14X17X17 14 17 17 9.1 14.1 0.004 Universal K-series needle roller assembly
K14X18X8 14 18 8 5.11 5.41 0.004 Universal K-series needle roller assembly
K14X18X10 14 18 10 7.1 8.5 0.0037 Universal K-series needle roller assembly
K14X18X11 14 18 11 6.52 7.41 0.004 Universal K-series needle roller assembly
K14X18X13 14 18 13 8.2 10.1 0.0052 Universal K-series needle roller assembly
K14X18X14 14 18 14 9.5 12.3 0.0065 Universal K-series needle roller assembly