MFC20X25CA Airtac Round Body Air Cylinder Waterproof) 34mm Bearing outer diameter is

34mm Bearing outer diameter is 100

NPB3/4X7SUT Airtac NPB Round Body Air Cylinder

Bore diameter - mm: 57

R188 Full Ceramic Bearings are made entirely of ceramic material

MR105 Hybrid Ceramic Bearings (5X10X3) can be made with chrome 52100 or stainless steel for the inside and outside race along with silicon nitride balls

MFC20X25CA Airtac Round Body Air Cylinder Waterproof) 34mm Bearing outer diameter isMFC20X25CA Airtac Round Body Air Cylinder Round body pneumatic cylinder, double acting, stainless steel, with cushion, 20mm bore, 25 mm stroke, Pivot type back cover, PT thread type Acting Type Double Acting with Cushion Airtac Product Series Airtac MF Round Body Air Cylinder Stainless Steel JIS Back Cover Type Pivot Bore Size 20mm Brand Airtac Component Type Round Body Pneumatic Cylinder Magnet Without Magnet Stroke Length 25mm Thread Type PT