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）
K32X36X15 32 36 15 14.3 26.4 0.117 Universal K-series needle roller assembly
K32X37X13 32 37 13 15.5 25.5 0.017 Universal K-series needle roller assembly
K32X37X17 32 37 17 19.9 35.5 0.018 Universal K-series needle roller assembly
K32X37X23 32 37 23 24.4 44.8 0.019 Universal K-series needle roller assembly
K32X37X26ZW 32 37 26 24.9 46 0.0285 Universal K-series needle roller assembly
K32X37X27 32 37 27 30 60 0.034 Universal K-series needle roller assembly
K32X37X28 32 37 28 23.6 43.5 0.03 Universal K-series needle roller assembly
K32X38X13 32 38 13 16.8 24.4 0.021 Universal K-series needle roller assembly
K32X38X14 32 38 14 19.8 30.5 0.0205 Universal K-series needle roller assembly
K32X38X16 32 38 16 21.5 34.5 0.022 Universal K-series needle roller assembly
K32X38X20 32 38 20 26.5 45 0.025 Universal K-series needle roller assembly
K32X38X26 32 38 26 33.5 61 0.03 Universal K-series needle roller assembly
K32X39X16 32 39 16 23.8 35.5 0.038 Universal K-series needle roller assembly
K32X39X18 32 39 18 26.5 41 0.037 Universal K-series needle roller assembly
K32X39X20 32 39 20 25.6 37.7 0.031 Universal K-series needle roller assembly
K32X40X25 32 40 25 37.5 58 0.037 Universal K-series needle roller assembly
K32X40X36 32 40 36 54 92 0.049 Universal K-series needle roller assembly
K32X40X42ZW 32 40 42 50 84 0.073 Universal K-series needle roller assembly
K32X45X19 32 45 19 33.7 35.9 0.077 Universal K-series needle roller assembly
K32X45X25 32 45 25 45.6 53 0.0635 Universal K-series needle roller assembly