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Zirconia self-aligning ball bearing with PA66 cage for high-precision and harsh-environment applications.
The CE-2204-ZrO₂ is a high-precision full ceramic self-aligning ball bearing featuring ZrO₂ (zirconia) rings and balls with a PA66 cage. ZrO₂ bearings utilize the high strength, corrosion resistance, and low friction properties of zirconia, making them ideal for harsh environments. They outperform steel in wear resistance and can operate without lubrication. The self-aligning design allows for angular misalignment between the shaft and housing, ensuring reliable performance even under shaft deflections. Commonly found in medical, aerospace, and high-speed applications, they ensure durability and precision under extreme conditions.
With a standard envelope of 20 mm bore, 47 mm outside diameter and 18 mm width, this bearing is dimensionally interchangeable with standard 2204 steel bearings. The PA66 cage offers good mechanical strength and chemical resistance, suitable for moderate temperature ranges.
Need a CE-2204-ZrO₂ bearing for your application?
Send TOJO your requirements for a technical evaluation and quotation.
| Parameter | Specification |
|---|---|
| Bearing No. | CE-2204-ZrO₂ |
| Bearing Type | Self-Aligning Ball Bearing (Full Ceramic) |
| Rings & Balls Material | ZrO₂ (Yttria-Stabilized Zirconia) |
| Cage Material | PA66 (Nylon 66) |
| Seal Type | Open |
| Lubrication | Dry / Lubrication-Free |
| Bore Diameter (d) | 20 mm |
| Outside Diameter (D) | 47 mm |
| Width (B) | 18 mm |
| Chamfer Radius (r) | 1 mm |
| Mounting Dimension (da min) | 25 mm |
| Mounting Dimension (Da max) | 42 mm |
| Mounting Dimension (ra max) | 1 mm |
| Reference Weight | ~0.11 kg (110 g) |
| Basic Dynamic Load Rating (Cr) | ~8.96 kN (reference) |
| Basic Static Load Rating (C0r) | ~2.31 kN (reference) |
| Maximum Speed (reference) | ~14,000 RPM (grease) |
| Temperature Range | -40°C to +120°C (PA66 cage limit) |
Yttria-stabilized zirconia provides high strength, corrosion resistance, and wear resistance. Low density enables lightweight construction and excellent electrical insulation.
The double-row self-aligning design accommodates angular misalignment between the shaft and housing, reducing stress and extending service life in flexible or misaligned mounting configurations.
ZrO₂ resists acids, alkalis, solvents, and seawater. The PA66 cage offers good chemical resistance, making this bearing suitable for many aggressive environments.
ZrO₂ is electrically insulating and non-magnetic, preventing arcing damage and electrolytic corrosion in electrical, semiconductor and precision equipment applications.
The low density of ZrO₂ reduces centrifugal forces, enabling high rotational speeds. The bearing can operate without lubrication in vacuum and cleanroom environments, reducing maintenance requirements.
*Actual operating temperature and speed limits should be confirmed according to the complete bearing configuration and application conditions. Note: PA66 cage limits the maximum continuous operating temperature to approximately +120°C.
● Medical & Dental Equipment — surgical handpieces, dental drills, and precision medical instruments requiring high speed, corrosion resistance, and lubrication-free operation.
● Semiconductor & Cleanroom — wafer handling, vacuum robots, and precision equipment; electrical insulation prevents current interference.
● Aerospace Instrumentation — actuators, gyroscopes, and lightweight mechanisms requiring extreme temperature tolerance and high reliability.
● High-Speed Spindles — PCB drilling spindles and small CNC machining centers balancing speed and stiffness for precision machining.
● Laboratory & Analytical Instruments — centrifuges, mixers, and test equipment demanding high rotational accuracy and chemical resistance.
TOJO BEARING COMPANY specializes in special-material bearing development, manufacturing and application support. Application-specific solutions can be evaluated according to:
Bearing dimensions
Ceramic material
Cage material
Lubrication
Radial clearance
Precision grade
Surface finish
Temperature
Speed
If the standard CE-2204-ZrO₂ configuration does not meet your requirements, send TOJO your operating conditions and bearing specifications for evaluation.
The bearing has a 20 mm bore, 47 mm outside diameter and 18 mm width, with a reference weight of approximately 0.11 kg.
ZrO₂ (zirconia) offers higher fracture toughness and corrosion resistance, while Si₃N₄ (silicon nitride) provides higher hardness and better thermal shock resistance. The choice depends on the specific application requirements.
Yes, ZrO₂ ceramic bearings can operate without lubrication in many applications, particularly in vacuum and cleanroom environments where lubricant contamination is unacceptable.
Yes. TOJO can evaluate material, dimensions, cage type, lubrication, precision and operating-environment requirements.
Looking for a CE-2204-ZrO₂ Full Ceramic Bearing? Send us your:
● Required quantity
● Application
● Speed
● Radial and axial load
● Operating temperature
● Lubrication conditions
● Environmental requirements
● Precision requirements
TOJO engineers can evaluate your application and recommend a suitable ZrO₂ ceramic bearing configuration.
TOJO BEARING COMPANY — Our Bearings, Your Solutions.
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NO.23 JIAHE ROAD XIAMEN CHINA
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