CE-682-ZrO₂-PEEK Ceramic Bearing

Ultra-miniature full ceramic deep groove ball bearing for medical, aerospace, and high-speed applications.

The CE-682-ZrO₂-PEEK is a high-precision full ceramic deep groove 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.

With an ultra-miniature envelope of 2 mm bore, 5 mm outside diameter and 1.5 mm width, this bearing is suitable for the most space-constrained precision devices. The PEEK cage provides excellent chemical resistance and high-temperature stability, further enhancing performance in demanding environments.

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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.

Ultra-Miniature Design

With a 2×5×1.5 mm envelope, the 682 series offers an extremely compact and lightweight design suitable for the most space-constrained precision devices.

Corrosion & Chemical Resistance

ZrO₂ resists acids, alkalis, solvents, and seawater. The PEEK cage further enhances chemical resistance, making this bearing suitable for the most aggressive environments.

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 & Lubrication-Free Operation

The lower 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.

Typical Applications

● 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.

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

Cage material

Lubrication

Radial clearance

Precision grade

Surface finish

Temperature

Speed

If the standard CE-682-ZrO₂-PEEK 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 CE-682-ZrO₂-PEEK bearing?

The bearing has a 2 mm bore, 5 mm outside diameter and 1.5 mm width, with a reference weight of approximately 0.11 g.

What is the difference between ZrO₂ and Si₃N₄ ceramic bearings?

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.

Can ZrO₂ bearings operate without lubrication?

Yes, ZrO₂ ceramic bearings can operate without lubrication in many applications, particularly in vacuum and cleanroom environments where lubricant contamination is unacceptable.

Can TOJO customize ZrO₂ bearings?

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

Request a Quote

Looking for a CE-682-ZrO₂-PEEK 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.

Request a Quote →    

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