Zirconia Ceramic Bearing Balls Set 25.0mm 25.4mm 26.988mm 27.0mm 28.575mm Precision Spheres For Ultra Hard ZrO2 Bearings Heavy Duty High Temperature Tolerance Smooth Motion Tight Tolerances Ideal For Precision Machinery And Upgrades

Zirconia Ceramic Bearing Balls Set: Ultra-Precise Spheres
✔️ Five diameters: 25.0, 25.4, 26.988, 27.0, 28.575 mm

These zirconia ceramic bearing balls are precision spheres designed for ultra-smooth motion in tight-tolerance bearings. They’re commonly used in precision machinery, vacuum systems, heat-treatment furnaces, and optical film equipment where high-temperature tolerance and low wear matter.

✅ Material: Zirconium Oxide (ZrO2) with ±0.0002 mm accuracy
✅ Hardness: HV 1100-1300; HRC 70-75
✅ Service temperature: up to 600°C
✅ Surface: smooth, polished to reduce friction and noise during operation
✅ Diameters: 25.0mm, 25.4mm, 26.988mm, 27.0mm, 28.575mm (set of five)

💡 What is a high-precision zirconia bearing ball used for in precision machinery? Zirconia ceramic bearing balls are used where tight tolerances and reliable motion are critical. - High-temperature tolerance for vacuum and heat-treat equipment - Low friction for quiet operation and longer life - Maintains roundness under load and thermal cycling - Ideal upgrades for precision bearings and guide wheels

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