Description
R-725 is an Open Miniature Ball Bearing, R-725 Bearing has an inner diameter of 2.5mm, R-725 small Bearing outer diameter is 7mm and R-725 Bearing width is 2.5mm, R-725 Bearing is made of Chrome Steel, 52100 is a high carbon, chromium containing low alloy steel, heat treatment and hardening of 52100 alloy steels will reach 60 Rockwell hardness and the most common alloy used in bearings.