C-7202-ZZP-DB ZrO₂ Ceramic Angular Contact Ball Bearing

High-precision zirconia ceramic bearing for extreme conditions and high-speed applications.

The C-7202-ZZP-DB is a high-precision ceramic angular contact ball bearing featuring ZrO₂ (zirconia) rings and balls with a PEEK 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. Commonly found in medical, aerospace, and high-speed applications, they ensure durability and precision under extreme conditions.

The -DB suffix indicates a duplex pair (back-to-back) configuration, which provides high rigidity and the ability to accommodate bidirectional axial loads and tilting moments. The ZZ designation refers to metal shields on both sides for contamination protection. With a 15 mm bore, 35 mm outside diameter and 11 mm width (per bearing), this bearing is suitable for precision equipment requiring combined radial and axial load capability.

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Technical Specifications

Key Features

Material – ZrO₂ (Yttria-Stabilized)

Yttria-stabilized zirconia provides high strength, corrosion resistance, and wear resistance. Low density enables lightweight construction and excellent electrical insulation.

Design – Angular Contact with DB Pairing

The angular contact design handles combined radial and axial loads. The -DB (back-to-back) configuration provides high rigidity, accommodates bidirectional axial loads, and resists tilting moments. Contact angles of 15°–40° can be selected per application.

Performance – Extreme Conditions

Operates from -200°C to +600°C with minimal thermal expansion. No lubrication needed in vacuum environments, reducing maintenance requirements.

Electrical Insulation & Non-Magnetic

ZrO₂ is electrically insulating and non-magnetic, preventing arcing damage and electrolytic corrosion in electrical, semiconductor and precision equipment applications.

High-Speed Capability

The lower density of ZrO₂ reduces centrifugal forces, enabling high rotational speeds with reduced heat generation. High-speed performance reaches up to 1.5× that of steel bearings.

PEEK Cage & ZZ Metal Shields

PEEK cage provides excellent chemical resistance and high-temperature stability. ZZ metal shields on both sides protect against contamination while maintaining low torque.

High-Precision Operating Characteristics

Available in high-precision grades (P4/P5 available), offering high operating accuracy and smooth, stable transmission for precision equipment.

*Actual operating temperature and speed limits should be confirmed according to the complete bearing configuration and application conditions. Load ratings and speeds shown are steel-equivalent references; ceramic versions may differ.

Typical Applications

● Medical Equipment — dental handpieces, surgical power tools, and precision medical instruments requiring high speed, corrosion resistance, and lubrication-free operation.

● Semiconductor Manufacturing — vacuum robots and wafer handling equipment; electrical insulation prevents current interference, ensuring process stability.

● High-Speed Spindles — PCB drilling spindles, small CNC machining centers; balancing speed and stiffness for precision machining.

● Aerospace Instrumentation — actuators, gyroscopes, and lightweight mechanisms requiring extreme temperature tolerance and high reliability.

● Laboratory & Analytical Instruments — centrifuges, mixers, and test equipment demanding high rotational accuracy and chemical resistance.

Custom ZrO₂ Bearing Solutions

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

Contact angle

Cage material

Lubrication

Preload

Precision requirements

Temperature

Speed

If the standard C-7202-ZZP-DB configuration does not meet your requirements, send TOJO your operating conditions and bearing specifications for evaluation.

Frequently Asked Questions

What are the dimensions of the C-7202-ZZP-DB bearing?

Each bearing has a 15 mm bore, 35 mm outside diameter and 11 mm width. In the DB (back-to-back) configuration, the combined width is approximately 22 mm. Reference weight per bearing is approximately 0.035 kg.

What does the -DB suffix mean?

The -DB suffix indicates a duplex pair (back-to-back) configuration, where two bearings are mounted back-to-back to provide high rigidity and accommodate bidirectional axial loads and tilting moments.

Can the C-7202-ZZP-DB handle radial and axial loads?

Yes. As an angular contact ball bearing, it is designed for combined radial and axial loading. The DB configuration provides enhanced rigidity and accommodates bidirectional axial loads.

Can ZrO₂ bearings be used in high-temperature applications?

Yes, suitable ZrO₂ configurations can be evaluated for high-temperature applications. The bearing operates from -200°C to +600°C depending on the complete bearing configuration.

Can TOJO customize ZrO₂ bearings?

Yes. TOJO can evaluate material, dimensions, contact angle, cage, lubrication, preload, precision and operating-environment requirements.

Request a Quote

Looking for a C-7202-ZZP-DB ZrO₂ Ceramic Angular Contact Ball 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.

Request a Quote →    

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