The needle roller and cage assembly (needle roller bearing) is an independent rolling element. The two guide surfaces of the cage have a wide spacing, which can not only guide the needle accurately, but also maintain the correct position of the needle. This type of bearing is suitable for occasions where the shaft and the housing hole can be used as a raceway. It is only necessary to machine the shaft and the housing hole raceway to the specified dimensional accuracy and geometric accuracy to ensure high rotation accuracy in the smallest space.

Bearing code structure characteristics

K/KS single row/single row split

KK/KKS double row/double row split

KZK connecting rod crank pin

KBK connecting rod piston pin

KNL Long Cylindrical Roller and Retaining Components

DF radial needle roller and cage components have single row K type and double row K......ZW type, and when the integral cage cannot be installed, special split needle roller and cage components can be used. Add "D" after the bearing model, namely K......D, K......ZWD.