Description
MR83 is an Open Miniature Ball Bearing, MR83 Bearing has an inner diameter of 3mm, MR83 small Bearing outer diameter is 8mm and MR83 Bearing width is 2.5mm, MR83 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 get you 60 Rockwell hardness and very common in bearings.