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Engineers, hobbyists, and maintenance professionals who work in wet, chemically aggressive, or electrically sensitive environments know the frustration of steel bearings that corrode, seize, or conduct stray currents. These double-sided sealed ZrO2 full ceramic bearings are built for exactly those conditions — delivering reliable rotation where standard bearings fail.
Each bearing is constructed entirely from zirconia (ZrO2) ceramic, including the balls, inner race, and outer race. Available in seven standard 6800-series models: 6800 (ID 10 mm / OD 19 mm / H 5 mm — approx. 0.39″ × 0.75″ × 0.20″) through 6806 (ID 30 mm / OD 42 mm / H 7 mm — approx. 1.18″ × 1.65″ × 0.28″). Double-sided seals retain lubrication and exclude contaminants without adding metallic components.
Typical applications include food-processing conveyor rollers requiring wash-down resistance, RC vehicle wheel hubs and spindles needing lightweight low-friction rotation, laboratory centrifuge shafts where electrical isolation is critical, and marine or poolside equipment exposed to chlorinated or salt water. The non-magnetic, non-conductive ZrO2 full ceramic bearing is also a reliable choice for MRI-adjacent equipment and semiconductor handling tools.
| Bearing Series | 6800 (deep groove, single row) |
|---|---|
| Available Models | 6800 / 6801 / 6802 / 6803 / 6804 / 6805 / 6806 |
| Bore Diameter (ID) | 10 mm – 30 mm (0.39″ – 1.18″) — see variant options |
| Outer Diameter (OD) | 19 mm – 42 mm (0.75″ – 1.65″) — see variant options |
| Width (Height) | 5 mm – 7 mm (0.20″ – 0.28″) — see variant options |
| Ball Material | Zirconia (ZrO2) ceramic |
| Race Material | Zirconia (ZrO2) ceramic |
| Seal Type | Double-sided sealed (2RS) |
| Seal Material | See variant options |
| Operating Temperature | Typically –40 °C to +400 °C (–40 °F to +752 °F) |
| Electrical Conductivity | Non-conductive |
| Magnetic Properties | Non-magnetic |
| Corrosion Resistance | Resistant to acids, alkalis, salt water, chlorinated media |
| Quantity per Pack | 1 / 2 / 5 / 10 pcs — see variant options |
Match the model to your shaft and housing dimensions. The model number encodes the bore (ID), outer diameter (OD), and width (H): for example, 6802 fits a 15 mm shaft in a 24 mm housing bore with a 5 mm width. Measure your existing bearing or shaft diameter first, then select the matching model from the variant dropdown above.
ZrO2 zirconia ceramic has a hardness of approximately 8–9 on the Mohs scale and a flexural strength typically in the range of 900–1200 MPa, which is competitive with hardened bearing steel for many applications. However, ceramic is more brittle under sharp impact loads. These bearings are best suited for steady rotational loads in corrosive or electrically sensitive environments rather than heavy shock-load applications.
The double-sided seals (2RS) retain a factory-applied grease fill, so the bearings arrive ready to install without additional lubrication in most standard-speed applications. For very high-speed or high-temperature use, consult the grease manufacturer's specifications to confirm compatibility with ZrO2 ceramic surfaces.
Yes. ZrO2 ceramic is resistant to salt water, dilute acids, alkalis, and chlorinated water — environments that cause rapid corrosion in standard steel bearings. The double-sided seals provide an additional barrier against liquid ingress. For continuous immersion in concentrated acids or strong oxidizers, contact us to confirm suitability for your specific media.
Yes. Zirconia ceramic is an electrical insulator. Both the races and the balls are non-conductive, making these bearings suitable for electric motors, generators, and equipment where stray currents or electrolytic corrosion are concerns. They are also non-magnetic, which is important for MRI-adjacent and semiconductor handling equipment.
Single-piece (×1) packs are ideal for prototyping, repair, or replacement of one bearing. Two-piece (×2) packs suit paired-shaft assemblies. Five-piece (×5) and ten-piece (×10) packs offer a lower per-unit cost for production runs, maintenance stock, or multi-axis machines. Select your preferred quantity from the Qty(pcs) variant option above.
