The Fafnir 310KDDN is a deep groove ball bearing. It is a single row, double shielded bearing with a bore diameter of 50 mm, an outside diameter of 110 mm, and a width of 27 mm. The bearing has a maximum RPM of 3,125 and a temperature range of -60 degrees to 200 degrees F. It is made of steel and has a dynamic load capacity of 15,600 lb and a static load capacity of 8,500 lb.