R188 Full Ceramic Bearing Zirconia ZrO2 Deep Groove Miniature Ball Bearing Quarter Inch By Half Inch By Sixteenth Inch Open On Both Sides For In Place Lubrication High Precision High Speed Optical Instruments And Printing

R188 Ceramic Zirconia Bearing: 6.35x12.70x4.76 mm precision
✔️ Open on both sides for lubrication, high-precision, 1 pc pack

This R188 deep groove bearing uses zirconia ceramic components to deliver exceptional corrosion resistance, heat tolerance, and electrical insulation. It’s built for high-speed optical instruments, printing equipment, and precision tools where minimal friction matters. This listing is for a single open-type bearing; sealed variants exist separately.

✅ Model: R188, ID 6.35 mm (1/4"), OD 12.70 mm (1/2"), Thickness 4.76 mm (3/16")
✅ Ball, inner, outer, and cage: Zirconia (ZrO2)
✅ Type: Open-type, pre-lubricated for in-place lubrication
✅ Accuracy: P6; Noise: Z1
✅ Pack: 1 piece per order
✅ Applications: optical instruments, printing machinery, machine tools, high-speed motors, low-temperature engineering

💡 What is a ceramic deep groove bearing used for in precision equipment? - Handy in high-speed optics and printing gear - Great for corrosion resistance and insulation - Supports radial and axial loads with low friction