SMC ZK2A Vacuum Unit, Single Unit Type Vacuum Generator, ZK2A12K5NL2A 06 B teclock 4 dial combination security for 4 dial combination security for keyless convenience Bore Type Round Bore Diameter 130 mm Outside Diameter 230 mm Overall Width 40 mm Closure Type Double Shielded 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 41580 lbf Static Load Capacity 33000 lbf Precision Rating ISO Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 1