Thrust Be aring, 920-08-020-145. It will not fit early models (pre 1974) that used extended race bearings. Fits later and current model "Wood Only" band saws with non-extended race bearings including 28-200, 28-203, 28-206, 28-209, 28-216, 28-230, 28-231, 28-241, 28-243, 28-245, 28-248, 28-255, 28-262, 28-263, 28-270, 28-274, 28-275, 28-276, 28-278, 28-280, 28-283, 28-285, 28-290, 28-293, 28-299, 28-475, 28-300, 28-348, 28-380.