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High-precision zirconia ceramic bearing for combined radial and axial loads in extreme environments.
The 7304 ZrO₂ (zirconia) Angular Contact Ball Bearing is designed for applications requiring combined radial and axial loads together with the special properties of ceramic materials.
With a 20 mm bore, 52 mm outside diameter and 15 mm width, this zirconia ceramic bearing is suitable for selected semiconductor, chemical, medical, electrical and precision equipment applications where corrosion resistance, electrical insulation, non-magnetic properties or specialized temperature performance are required.
Need a 7304 ZrO₂ bearing for your application?
Send TOJO your requirements for a technical evaluation and quotation.
| Parameter | Specification |
|---|---|
| Bearing No. | 7304 |
| Bearing Type | Angular Contact Ball Bearing |
| Material | ZrO₂ Ceramic |
| Bore Diameter (d) | 20 mm |
| Outside Diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Minimum Chamfer Radius (r) | 1.1 mm |
| Minimum Chamfer Radius (r1) | 0.6 mm |
| Mounting Dimension (da min.) | 27 mm |
| Mounting Dimension (Da max.) | 45 mm |
| Maximum Fillet Radius (ra max.) | 1 mm |
| Reference Weight | 0.11 kg |
As an angular contact ball bearing, the 7304 is designed to accommodate combined radial and axial loads. Contact angle, preload and bearing arrangement can be selected according to application requirements.
ZrO₂ ceramic provides good corrosion resistance and can be considered for applications involving moisture, corrosive environments and selected chemical media.
Zirconia offers high hardness and good wear resistance, making it suitable for applications where conventional bearing materials may experience material degradation or wear.
ZrO₂ is electrically insulating and non-magnetic, making the bearing suitable for selected electrical, semiconductor, medical and precision equipment applications.
Depending on the complete bearing configuration, including cage, lubrication and operating conditions, ZrO₂ bearings can be evaluated for demanding temperature applications. TOJO indicates an approximate -200°C to +600°C range for suitable configurations.
*Actual operating temperature and speed limits should be confirmed according to the complete bearing configuration and application conditions.
● Semiconductor & Cleanroom Equipment — wafer handling, vacuum mechanisms and precision equipment.
● Chemical Equipment — pumps, mixers and other applications requiring corrosion resistance.
● Medical & Laboratory Equipment — selected equipment requiring non-magnetic or corrosion-resistant components.
● Electrical Equipment — applications requiring electrical insulation.
● High-Speed Spindles — selected CNC, grinding and PCB drilling applications.
● Precision Equipment — systems requiring specialized ceramic material properties.
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 7304 configuration does not meet your requirements, send TOJO your operating conditions and bearing specifications for evaluation.
The 7304 has a 20 mm bore, 52 mm outside diameter and 15 mm width, with a reference weight of approximately 0.11 kg.
Yes. As an angular contact ball bearing, it is designed for combined radial and axial loading. Actual load capacity depends on the bearing configuration and operating conditions.
Yes, suitable ZrO₂ configurations can be evaluated for high-temperature applications. TOJO indicates an approximate -200°C to +600°C range, depending on the complete bearing configuration.
Yes. TOJO can evaluate material, dimensions, contact angle, cage, lubrication, preload, precision and operating-environment requirements.
Looking for a 7304 ZrO₂ 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.
TOJO BEARING COMPANY — Our Bearings, Your Solutions.
Our bearings, Your solutions!
NO.23 JIAHE ROAD XIAMEN CHINA
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