30 Pack Full Ceramic Ball Bearings 6004-2RS ZrO2 20x42x12 mm With PTFE Cage High Precision Low Friction Corrosion Resistant Ceramic Bearings For RC CNC 3D Printing And Hobby Applications

30-Pack Full Ceramic 6004-2RS Zirconia Bearings 20x42x12mm
✔️ 30-pack full ceramic 6004-2RS with zirconia balls & PTFE cage

These are full ceramic ball bearings in a 30-pack, featuring zirconia balls and zirconia races with a PTFE cage. They’re designed for high-speed, high-precision applications and are commonly used in robotics, CNC machines, and medical equipment where low friction and corrosion resistance matter.

✅ Inner diameter: 20 mm
✅ Outer diameter: 42 mm
✅ Width: 12 mm
✅ Construction: full ceramic with zirconia balls and zirconia races; PTFE cage
✅ Pack: 30 bearings

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

Ceramic bearings are handy for high-speed, low-friction operation in precision machinery. - high-speed, low-friction performance with zirconia ceramic balls - corrosion resistance suitable for harsh environments - lightweight design improves efficiency in precision assemblies