1. Product Overview The WJ222820 is an inch-size open needle roller cage assembly without outer shell, standard dimension 34.925×44.45×31.75mm. It adopts dense arranged needle rollers and integrated stamped steel cage, featuring ultra-compact radial cross-section and outstanding heavy radial load capacity. It requires matched hardened housing and quenched shaft as raceways, widely used in agricultural machinery, small gearboxes and compact inch transmission equipment. Get a