50,8 mm x 100 mm x 55,56 mm TIMKEN ER32 Insert Bearings Cylindrical OD

Insert Bearings Cylindrical OD offers a 50,8 mm x 100 mm x 55,56 mm TIMKEN ER32 Insert Bearings Cylindrical OD COOPER BEARING LIMITED selection of 30 Outer Diameter (mm) Genuine Insert Bearings Cylindrical OD at Wholesale Prices. We are 50,8 mm x 100 mm x 55,56 mm a 50,8 mm x 100 mm x 55,56 mm TIMKEN ER32 Insert Bearings Cylindrical OD Certified Parts Retailer

What is ER32 bearing cross reference？