KA030CP0 Thin Section Bearing Bore ID 3" x OD 3-1/2" x 1/4"KA030CP0 Slim Section Bearing Open Type 3" ID x 3 1 2" OD x 1 4" Wide Nylon Cage The KA030CP0 is an ultra thin, slim section ball bearing designed for tight space applications where lightweight and precision are critical. With a 1 4" cross section and nylon cage, it's ideal for robotics, instruments, and aerospace assemblies requiring smooth, low friction movement. Inner diameter (ID): 3" inch Outer diameter (OD): 3. 5" inch Width: 0. 25" inch (1 4")