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Info:Timken® A4138-2 A4000 Bearing Cup, 1.3775 in Dia Outside, 0.3437 in W Cup, 0.433 in W Bearing, 0.05 in Max House Fillet Radius, 1.28 in Frontface/1.14 in Backface Dia Max House Shoulder
Info:Timken® A4138D-30000 A4000 Double Tapered Bearing Cup, 1.3775 in Dia Outside, 13/16 in W Cup, 0.991 in W Bearing, 0.03 in Max House Fillet Radius, 1.26 in Frontface Dia Max House Shoulder