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Full Ceramic Bearing 1/4" x 1/2" x 3/16" inch Miniature
R188 full ceramic ball bearing 1/4" x 1/2" x 3/16"
✔️ Zirconia ceramic open bearing with PTFE cage
This R188 full ceramic bearing is a handy pick for high-speed spinners, lab devices, electronics, and applications where corrosion resistance, non-conductivity, and smooth rolling really matter. Made entirely from zirconia ceramic with a PTFE cage, it runs clean, light, and stable.
✅ Type: full ceramic ball bearing
✅ Balls: zirconia ceramic (ZrO₂)
✅ Races: zirconia ceramic (ZrO₂)
✅ Cage material: PTFE
✅ Closures: open
✅ Dimensions: 1/4" ID x 1/2" OD x 3/16" width
✅ Highest temperature: 356°F (180°C)
✅ Pack size: 1 bearing
Dimensions table (inch):
| Inner Diameter | Outer Diameter | Width |
|---|---|---|
| 1/4" | 1/2" | 3/16" |
💡 Why choose full ceramic bearings for precision tools and demanding environments?
They run smooth while resisting heat, corrosion, and electrical conduction.
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Zirconia ceramic handles moisture and chemicals better than steel
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Open design works well in clean, low-friction setups
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PTFE cage keeps the balls running stable at higher speeds
A clean, lightweight bearing that gives you ultra-smooth rotation wherever durability and precision matter.