Full Ceramic Zirconia Ball Bearing R2-5-2RS, 1/8 Inch Inner Diameter, 5/16 Inch Outer Diameter, 9/64 Inch Width, High Precision Ceramic Bearing For Industrial And Commercial Applications With Low Friction And Superior Wear Resistance

High-end ceramic bearing, 1/8 x 5/16 x 9/64 in, single unit
✔️ ID 1/8 in (3.18 mm), OD 5/16 in (7.94 mm), W 9/64 in (3.57 mm)

This fully ceramic bearing features zirconia balls and ceramic races, delivering exceptional hardness, low friction, and corrosion resistance. It’s a top pick for precision equipment where stable, high-speed operation is essential, such as aerospace, medical devices, and semiconductor tooling.

✅ Bore 1/8 in (3.175 mm); OD 5/16 in (7.938 mm); width 9/64 in (3.571 mm)
✅ Cage: PTFE; Closures: PTFE covers; Balls: Zirconia ceramic (ZrO2); Races: Zirconia ceramic
✅ Full ceramic construction for high rigidity and corrosion resistance
✅ Quantity: 1 bearing

💡 What is a ceramic bearing used for in precision machinery?

They are handy for smooth, long-life motion in demanding equipment.

- High-speed, low-friction operation - Corrosion resistance in harsh environments - Lightweight zirconia components for reduced inertia - Suitable for clean-room applications