51204G Nachi Thrust Bearing 20x40x14mm Japan51204G Nachi Thrust Ball Bearing 20mm x 40mm x 14mm Nylon Cage, One Axial Load Bearing The 51204G Nachi thrust ball bearing is built to support strong axial or vertical loads in one direction. With a compact 20mm x 40mm x 14mm size and durable nylon cage, this high quality bearing is a go to choice for smooth, low friction operation in industrial and mechanical applications. Handles axial loads in one direction Made from 52100 chrome steel for