30 pack 639 full ceramic ball bearings 9x30x10mm made from zirconia ZrO2 with PTFE cage for miniature industrial equipment, corrosion resistant and nonconductive design for clean environments

639 Full Ceramic Ball Bearing 9 mm x 30 mm x 10 mm Miniature Size
✔️ Pack of 30 zirconia ceramic bearings for clean and corrosion resistant motion

This full ceramic miniature ball bearing set is made for compact machines that need smooth rotation in wet, chemical, or high heat environments. With ceramic races and balls, these bearings run without rust and stay stable in places where steel bearings break down fast.

✅ Pack size includes 30 bearings
✅ Bearing type single row full ceramic ball bearing
✅ Model 639
✅ Inner diameter 9 mm
✅ Outer diameter 30 mm
✅ Width 10 mm
✅ Balls made from zirconia ceramic ZrO2
✅ Inner and outer races made from zirconia ceramic ZrO2
✅ Cage material PTFE
✅ Non magnetic and corrosion resistant
✅ Designed for high temperature and chemical exposure
✅ Suitable for light to moderate radial loads

💡 Why choose full ceramic miniature ball bearings for corrosive or high temperature applications?
They stay stable where steel bearings fail.

• Zirconia ceramic resists rust, moisture, and chemical attack

• PTFE cage helps reduce friction and heat buildup

• Non magnetic material works well in sensitive equipment

• Maintains smooth rotation in lab tools, pumps, and small automation systems

This ceramic bearing pack is a handy choice for compact equipment that needs long life, clean running, and dependable motion in harsh operating conditions.