If you are bothered about the KC140XP0 14"x14
Acting Type Double Acting Airtac ma Round Body Air Cylinder Stainless Steel Airtac Product Series Airtac MA Round Body Air Cylinder Stainless Steel Back Cover Type Pivot Bore Size 32mm Brand Airtac Component Type Round Body Pneumatic Cylinder Magnet With Magnet Stroke Length 200mm Thread Type PT
61821 Hybrid Ceramic Bearings can be made with chrome 52100 or stainless steel for the inside and outside race along with silicon nitride balls
CKD Air Cylinder CMK2-C-00-20-220
TCL20x100S Airtac Guided Air Cylinder
W3205SA-5Z-C5Z8 NSK Ball Screw Full Ceramic Bearings If you are bothered aboutW3205SA 5Z C5Z8 NSK Ball Screw Ball Return Tube Ball Screw, 32 mm Dia Screw, 8 mm, Right Hand Thread, 500 mm L, 27. 5 mm Dia Root, 1 Starts Metric Overall Height 499 MM Overall Length 85 MM Overall Width 85 MM