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）
K8X12X12 8 12 12 5.6 5.3 0.003 Universal K-series needle roller assembly
K8X12X13 8 12 13 5.6 5.3 0.0034 Universal K-series needle roller assembly
K9X12X10 9 12 10 4.5 5 0.0036 Universal K-series needle roller assembly
K9X12X13 9 12 13 5.9 7.1 0.0015 Universal K-series needle roller assembly
K10X13X8 10 13 8 3.37 3.47 0.0021 Universal K-series needle roller assembly
K10X13X10 10 13 10 4.75 5.5 0.0019 Universal K-series needle roller assembly
K10X13X13 10 13 13 6.2 7.8 0.0016 Universal K-series needle roller assembly
K10X13X16 10 13 16 7.1 9.3 0.0023 Universal K-series needle roller assembly
K10X14X8 10 14 8 4.3 3.95 0.0029 Universal K-series needle roller assembly
K10X14X10 10 14 10 5.8 6 0.0027 Universal K-series needle roller assembly
K10X14X12 10 14 12 5.94 6 0.0025 Universal K-series needle roller assembly
K10X14X13 10 14 13 7.5 8.4 0.0038 Universal K-series needle roller assembly
K10X14X15 10 14 15 7.08 7.52 0.0046 Universal K-series needle roller assembly
K10X16X12 10 16 12 8.1 7.2 0.0048 Universal K-series needle roller assembly
K11X14X10 11 14 10 4.4 5.02 0.0055 Universal K-series needle roller assembly
K12X15X8 12 15 8 3.75 4.2 0.0025 Universal K-series needle roller assembly
K12X15X9 12 15 9 4.45 5.25 0.0022 Universal K-series needle roller assembly
K12X15X10 12 15 10 4.9 6.1 0.0027 Universal K-series needle roller assembly
K12X15X12 12 15 12 5.59 7.02 0.0029 Universal K-series needle roller assembly
K12X15X13 12 15 13 6.4 8.5 0.0032 Universal K-series needle roller assembly