634-2RS Full Ceramic ZrO2 Miniature Ball Bearings 4x16x5mm Pack Of 30 High Precision Low Friction Bearings With PTFE Cage For Small Motors Robotics And Precision Mechanisms Ideal For Precision Instruments And Hobbyist Projects

Enhanced 30-Pack Full Ceramic 4x16x5mm Mini Bearings
✔️ 30-piece pack of 4x16x5mm zirconia ceramic bearings

These are full ceramic ball bearings featuring zirconia balls and zirconia races, with a PTFE cage. Pack contains 30 bearings, ideal for precision equipment, robotics, and equipment in cleanrooms or medical devices where moisture sensitivity matters.

✅ Type: Full Ceramic Ball Bearing 2RS sealed for contaminants
✅ Ball material: Zirconia (ZrO2) ceramic for high hardness and corrosion resistance
✅ Cage: PTFE for low friction and smooth operation
✅ Size: 4x16x5 mm (ID 4 mm, OD 16 mm, width 5 mm)
✅ Pack size: 30 bearings in each lot
✅ Seals: 2RS (dual rubber seals) for dust and moisture protection

💡 What is a ceramic ball bearing used for in precision equipment? This handy guide explains common uses.

- high speed, low friction operation in precision motors and spindles - corrosion resistance for humid or sterile environments - long life with reduced wear in robotics and instrumentation - low particulate generation benefits cleanroom and optical setups