NTN Spherical Roller Bearings w Standard Bore , 23228EMD1 Heavy Duty Nippers Bore Type Round Bore Diameter Electric Height Adjustable Workbench (Heavy Load) Bore Type Round Bore Diameter 150 mm Outside Diameter 270 mm Overall Width 45 mm Closure Type Open Row Type & Fill Slot Single Row Non Fill Slot Snap Ring Included Without Snap Ring Internal Clearance C3 Operating Temperature Range 40 to 250 ºF Cage Type Pressed Dynamic Load Capacity 43830 lbf Static Load Capacity 37760 lbf Precision Rating Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 1 The connector is made of robust aluminum and the resulting skidding on the rollers may result in wear spherical roller bearings with tapered bores are also available