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）
K155X163X36 155 163 36 100 340 0.265 Universal K-series needle roller assembly
K160X170X46 160 170 46 152 510 0.356 Universal K-series needle roller assembly
K165X173X26 165 173 26 81 265 0.55 Universal K-series needle roller assembly
K165X173X32 165 173 32 97 330 0.32 Universal K-series needle roller assembly
K165X173X36 165 173 36 109 380 0.34 Universal K-series needle roller assembly
K170X180X46 170 180 46 158 540 0.375 Universal K-series needle roller assembly
K175X183X32 175 183 32 99 350 0.6 Universal K-series needle roller assembly
K185X195X37 185 195 37 128 425 0.4 Universal K-series needle roller assembly
K195X205X37 195 205 37 133 450 0.607 Universal K-series needle roller assembly
K210X220X42 210 220 42 154 560 0.62 Universal K-series needle roller assembly
K220X230X42 220 230 42 158 590 0.74 Universal K-series needle roller assembly
K240X250X42 240 250 42 164 630 0.79 Universal K-series needle roller assembly
K265X280X50 265 280 50 255 860 0.85 Universal K-series needle roller assembly
K285X300X50 285 300 50 268 930 1.81 Universal K-series needle roller assembly