6920 Hybrid Ceramic Bearings can be made with chrome 52100 or stainless steel for the inside and outside race along with silicon nitride balls
1128-8M-20-HL High Performance Timing Belt
If you have been looking for KB090CP0 9"x9
1mm Ring Material 52100 Chrome Steel Ball Material 52100 Chrome Steel Cage Material Brass Dynamic Radial Load 847 lbs ISO radial 1494 lbs Static Radial Load 1446 lbs Max Speed (X1000 rpm) 0 Lubrication Lubricated Shaft Mount Type Press Fit Temperature Range -30°C to 110 °C ABEC Rating ABEC-1 Radial Clearance 0
Product Number KD210AR0 System of Measurement Inch Bearing Type Ball For Load Direction Angular Contact Contact Angle 30° Construction Single Row Seal Type Open Series KD 1/2" x 1/2" Bore Dia 21" Bore Dia Tolerance -0
HLS25X20SBFG
Airtac Compact Slide Air Cylinder Four Point Contact Bearings 6920 Hybrid Ceramic Bearings canHLS25X20SBFG Airtac Compact Slide Air Cylinder Pneumatic compact slide cylinder (Roller bearing), 25mm Bore, 25mm Stroke, with Magnet, Shock absorber (retraction), G thread type Acting Type Double Acting Adjuster Option Shock Absorber Retraction Airtac hls Slide Table Actuator Roller Bearing Airtac Product Series Airtac HLS Slide Table Actuator Roller Bearing Bore Size 25mm Brand Airtac Component Type Guided Air Cylinder Magnet With Magnet Stroke