6903 Zirconia Ceramic Ball Bearing With Silicon Nitride Balls Full Ceramic Bearing Inner Diameter 17mm Outer Diameter 30mm Width 7mm High Performance ZrO2 Bearing For Precision Machinery And Industrial Applications

Ceramic 6903 Bearing with ZrO2 Races & Si3N4 Balls 17x30x7
✔️ Bore 17mm, OD 30mm, width 7mm; Single bearing, ZrO2 races

Full ceramic 6903 bearing featuring zirconia races and silicon nitride balls. This compact unit is designed for precision applications in machinery and automation, where high hardness, low friction, and corrosion resistance matter. Open closure makes it easy to inspect and clean in controlled environments.

✅Bore: 17 mm
✅Outer diameter ：30 mm
✅Width ：7 mm
✅ Races: ZrO2 (zirconium oxide)
✅ Balls: Si3N4 (silicon nitride)
✅ ケージ：PTFE
✅ Closure: Open
✅Pack size: piece

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

Here's a handy, plain-English answer. - low friction and high wear resistance over long life - corrosion resistance in wet or chemical environments - lightweight zirconia races and silicon nitride balls boost speed and accuracy - PTFE cages support easy lubrication and reliable operation