Info:Timken® 553SA-2 555 Single Row Bearing Cup, 5.1159 in Dia Outside, 1-3/16 in W Cup, 1-1/2 in W Bearing, 0.13 in Max House Fillet Radius, 4.6 in Frontface/4.37 in Backface Dia Max House Shoulder
Info:Timken® 553X-2 555 Bearing Cup, 4-13/16 in Dia Outside, 1-3/16 in W Cup, 1-1/2 in W Bearing, 0.13 in Max House Fillet Radius, 4.56 in Frontface/4.25 in Backface Dia Max House Shoulder