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）
K85X93X25 85 93 25 57.8 134 0.142 Universal K-series needle roller assembly
K85X93X27 85 93 27 64 153 0.13 Universal K-series needle roller assembly
K85X93X30 85 93 30 66.6 161 0.145 Universal K-series needle roller assembly
K90X97X20 90 97 20 45 113 0.157 Universal K-series needle roller assembly
K90X97X30 90 97 30 67.5 184 0.109 Universal K-series needle roller assembly
K90X98X25 90 98 25 60.4 145 0.151 Universal K-series needle roller assembly
K90X98X26 90 98 26 64 157 0.138 Universal K-series needle roller assembly
K90X98X27 90 98 27 61 150 0.148 Universal K-series needle roller assembly
K90X98X30 90 98 30 68 172 0.15 Universal K-series needle roller assembly
K95X102X21 95 102 21 48 122 0.172 Universal K-series needle roller assembly
K95X102X31 95 102 31 70.5 199 0.115 Universal K-series needle roller assembly
K95X103X27 95 103 27 65.5 165 0.172 Universal K-series needle roller assembly
K95X103X30 95 103 30 69 180 0.159 Universal K-series needle roller assembly
K95X103X40ZW 95 103 40 83 228 0.165 Universal K-series needle roller assembly
K100X107X21 100 107 21 48 127 0.266 Universal K-series needle roller assembly
K100X107X31 100 107 31 71.5 207 0.12 Universal K-series needle roller assembly
K100X108X27 100 108 27 57 143 0.173 Universal K-series needle roller assembly
K100X108X30 100 108 30 71 188 0.185 Universal K-series needle roller assembly
K105X112X21 105 112 21 47.5 127 0.18 Universal K-series needle roller assembly
K105X112X31 105 112 31 71 207 0.129 Universal K-series needle roller assembly