30-Pack Full Ceramic 624-2RS ZrO2 Miniature Ball Bearings 4x13x5mm High Precision Ceramic Bearings With PTFE Cage For Low Friction In Small Machinery And Hobby Projects Wholesale Pack Of 30

Premium 30-Pack Ceramic 4x13x5 Ball Bearings, Zirconia
✔️ 30 bearings, full ceramic 624-2RS, zirconia balls, PTFE cage

These are full ceramic ball bearings sized 4x13x5 mm, designed for high-precision, low-wear applications where metal bearings would corrode or contaminate sensitive environments. Ideal for labs, medical devices, or clean-room machinery that require dry or oil-free operation.

✅ Inner diameter: 4 mm
✅ Outer diameter: 13 mm
✅ Width: 5 mm
✅ Balls: Zirconia ceramic (ZrO2)
✅ Käfig: PTFE (Polytetrafluoroethylene)
✅ Seals: 2RS on both sides
✅ Pack size: 30 bearings in this lot

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Ceramic bearings are handy in clean environments and high-speed setups where metal bearings wear quickly or contaminate products.

- low friction and corrosion resistance for sensitive environments
- suitable for sealed ball bearing configurations with ceramic components
- ideal for medical devices, labs, and precision machinery where metal bearings struggle