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）
K22X26X25ZW 22 26 25 17.1 29.4 0.012 Universal K-series needle roller assembly
K22X27X20 22 27 20 17.4 25.7 0.0177 Universal K-series needle roller assembly
K22X27X26 22 27 26 22.5 35.8 0.0179 Universal K-series needle roller assembly
K22X27X40ZW 22 27 40 29.9 51.5 0.0225 Universal K-series needle roller assembly
K22X28X17 22 28 17 19.4 27 0.039 Universal K-series needle roller assembly
K22X29X12 22 29 12 12.9 14 0.018 Universal K-series needle roller assembly
K22X29X16 22 29 16 20 25.5 0.0161 Universal K-series needle roller assembly
K22X29X17 22 29 17 18.7 22.6 0.016 Universal K-series needle roller assembly
K22X29X18 22 29 18 19.8 24.4 0.0225 Universal K-series needle roller assembly
K22X29X20 22 29 20 20.9 26.1 0.0235 Universal K-series needle roller assembly
K22X30X15 22 30 15 20.1 23.4 0.0265 Universal K-series needle roller assembly
K22X32X24 22 32 24 34 40 0.018 Universal K-series needle roller assembly
K22X32X30 22 32 30 36.4 42.7 0.043 Universal K-series needle roller assembly
K22X32X32 22 32 32 38.8 46.3 0.0525 Universal K-series needle roller assembly
K23X28X24 23 28 24 21.6 34.5 0.056 Universal K-series needle roller assembly
K23X29X13 23 29 13 13.8 17.2 0.022 Universal K-series needle roller assembly
K23X30X15 23 30 15 17.3 20.8 0.0151 Universal K-series needle roller assembly
K23X30X16 23 30 16 18.6 22.6 0.021 Universal K-series needle roller assembly
K23X35X16 23 35 16 24.5 23.9 0.022 Universal K-series needle roller assembly
K24X28X10 24 28 10 9.6 14.8 0.029 Universal K-series needle roller assembly