HC203 17mm Axle Bearing insert - eccentric CollarHC203 Bearing insert with eccentric Collar 17mm x 47mm x 31mm 17mm Bearing insert with eccentric Collar HC203, measures an inner diameter of 17mm, the outer diameter is 47mm, the inner ring width is 31mm and the outer ring width is 16mm, a standard bearing size commonly used in a variety of industrial and commercial applications. HC203 Bearing Mounted Bearing Bearing Size: 17mm x 47mm x 16mm 31mm Inner Diameter: 17mm Outer Diameter: 47mm Inner Ring