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）
K32X45X32 32 45 32 58.5 73 0.0845 Universal K-series needle roller assembly
K32X45X50 32 45 50 81.5 111 0.109 Universal K-series needle roller assembly
K32X46X32 32 46 32 66 84 0.162 Universal K-series needle roller assembly
K35X40X13 35 40 13 16.2 28 0.119 Universal K-series needle roller assembly
K35X40X17 35 40 17 20.8 38.5 0.019 Universal K-series needle roller assembly
K35X40X25 35 40 25 29.5 60 0.021 Universal K-series needle roller assembly
K35X40X26 35 40 26 28.7 56.8 0.031 Universal K-series needle roller assembly
K35X40X26ZW 35 40 26 26.1 50 0.0345 Universal K-series needle roller assembly
K35X40X27 35 40 27 25 48.5 0.037 Universal K-series needle roller assembly
K35X40X30ZW 35 40 30 25.5 50 0.039 Universal K-series needle roller assembly
K35X40X32ZW 35 40 32 32 66 0.048 Universal K-series needle roller assembly
K35X41X13 35 41 13 17.7 26.8 0.05 Universal K-series needle roller assembly
K35X41X14 35 41 14 19.4 30.5 0.0225 Universal K-series needle roller assembly
K35X41X15 35 41 15 20.9 33.5 0.026 Universal K-series needle roller assembly
K35X41X40ZW 35 41 40 43 84 0.027 Universal K-series needle roller assembly
K35X42X16 35 42 16 24.4 37.5 0.055 Universal K-series needle roller assembly
K35X42X18 35 42 18 27.5 43 0.034 Universal K-series needle roller assembly
K35X42X20 35 42 20 30 49 0.034 Universal K-series needle roller assembly
K35X42X30 35 42 30 39 68 0.037 Universal K-series needle roller assembly
K35X42X45ZW 35 42 45 42.5 74 0.067 Universal K-series needle roller assembly