RBC Bearings Incorporated DW4K2-FS428 Control Bearing

DW4K2-FS428 is RBC Bearings’ DW-series airframe control ball bearing, a compact double‑row unit designed for high‑load, small‑diameter actuation in aerospace applications. It features a 0.25 in bore, a 0.63 in outside diameter, and a 0.562 in width, with 52100 bearing‑quality steel and PTFE seals in a cadmium finish, prelubricated for life. The FS428 suffix identifies the sealed configuration, and the bearing is specified for a radial load of 1,400 lbf (dynamic). Common applications include aircraft control linkages and actuators or other precision joints in space‑constrained assemblies where reliable sealing and smooth operation are required. This part is cataloged by RBC Bearings Incorporated as part of the DW airframe bearing family and appears in distributor listings under DW4K2FS428.