Carter Bearings CNB-20-SB High Precision Ball Bearing

Carter Bearings CNB-20-SB is a sealed, hex-mounted cam follower in the CNB-SB standard line, built around a crowned cylindrical roller for high-load, high-precision tracking in cam-driven mechanisms. The 0.625 in bore (5/8 in) accommodates a 5/8-inch shaft, delivering reliable rotation in compact spaces, while the sealed body protects the bearing from dust and moisture and helps preserve lubrication. As part of Carter’s standard needle bearing cam followers, the CNB-20-SB uses a crowned running surface to distribute load more evenly and reduce peak stresses on the follower, improving service life in demanding environments; the design is suited for automation equipment, packaging lines, and machine tools where cam-driven motion is required. The model features a standard hex mounting and a lubrication hole threaded to 1/4-28, enabling straightforward installation and periodic re-lubrication without disassembly.