6201 Hybrid Ceramic Bearings (12X32X10) can be made with chrome 52100 or stainless steel for the inside and outside race along with silicon nitride balls
You can purchase KB080CP0 8"x8
The oil seals part number is TC135x165x12 FKM / FPM - Viton and This oil seal has the following Dimensions: 135*165*12 mm
WBK10-01A NSK Acme and Ball Screw
SAI80X400SHT Airtac Standard Air Cylinder
TCM32x50ST Airtac TCM Guided Air Cylinder, Dual Rod saleyee 6201 Hybrid Ceramic Bearings (12X32X10)TCM32x50ST Airtac TCM Guided Air Cylinder, Dual Rod Guided pneumatic cylinder, dual rod, double acting, bronze bearing, 32mm bore, 50mm stroke, with magnet, thread type NPT Product Info Acting Type Double Acting Airtac tcm Dual Rod Guided Air Cylinder Heavy Duty JIS Standard with Bronze Bearing Product Series Airtac TC Guided Air Cylinder Dual Rod Heavy Duty JIS Bore Size 32mm Brand Airtac Component Type Guided Air Cylinder Magnet With Magnet Stroke