NTN Deep Groove Ball Bearings , 6413 Dead Blow Large Hammer Bore Type Round Bore Diameter CDQ2B160 250DCMZ Bore Type Round Bore Diameter 55 mm Outside Diameter 80 mm Overall Width 13 mm Closure Type Double Shielded Row Type & Fill Slot Single Row Non Fill Slot Snap Ring Included Without Snap Ring Internal Clearance CN Operating Temperature Range 40 to 250 ºF Cage Type Pressed Dynamic Load Capacity 3970 lbf Static Load Capacity 2990 lbf Precision Rating ISO Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 13 Hand Socket 6mm Hand Socket 2400 7mm Hand Socket 8mm Hand Socket 10mm Hand Socket 11mm Hand Socket 12mm Hand Socket 13mm Hand Socket 14mm Hand Socket 15mm Hand Socket 16mm Hand Socket 17mm Hand Socket 19mm Hand Socket 22mm Hand Socket Accessory 20 Item # d D B r Static Load Rating Dynamic Load Rating 6413 2 low torque construction