Full Complement Ceramic Ball Bearing 6004 Si3N4 20x42x12mm High Precision Silicon Nitride Bearing Delivers Low Friction Excellent Wear Resistance Lightweight High Temperature and Corrosion Resistance for Long Lasting Performance

Ceramic 6004 Bearing, Si3N4, 20x42x12 mm wide
✔️ 20x42x12 mm full ceramic Si3N4 bearing, no cage, 1 pc

6004 Full Complement Ceramic Ball Bearing made from Si3N4 silicon nitride delivers low friction, high rigidity, and corrosion resistance for dependable performance. This open-bearing unit is ideal for high-speed rotary applications in robotics, CNC machines, medical devices, and lab equipment where precision and longevity matter. Dimensions: bore 20 mm, outer diameter 42 mm, width 12 mm (20x42x12 mm / 0.79 x 1.65 x 0.47 in).

✅ Inner diameter: 20 mm
✅ Outer diameter: 42 mm
✅ Width: 12 mm
✅ Material: Si3N4 silicon nitride ceramic
✅ Cage: none (full-complement design)
✅ Quantity: 1 bearing

💡 What is a ceramic ball bearing used for in high-precision machinery? This handy overview explains its role in demanding equipment.

- High-speed, low-friction operation for precise drives
- Temperature stability and long service life in repetitive cycles
- Corrosion resistance in harsh environments
- Consistent performance in robotics, CNC, instrumentation