What is the equivalent of a 7304 bearing?

The 7304 is a 20×52×15mm angular contact ball bearing with verified equivalents across multiple brands: NSK 7304A, Timken 7304, FAG 7304-B-TVP, SKF 7304 BEP. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 7304 bearing?

The 7304 bearing has a bore diameter of 20mm, outer diameter of 52mm, and width of 15mm. It has a dynamic load rating of 14.31 kN, static load rating of 6.24 kN, and weighs 89g. Maximum speed with grease lubrication is 11,900 rpm.

Can I replace a NTN 7304 with a NSK equivalent?

Yes. NTN and NSK bearings with the same ISO designation are dimensionally interchangeable. The 7304 (20×52×15mm) can be replaced with the equivalent NSK part number as long as the seal type (open) and clearance class (CN) match. Always verify load ratings and speed limits for your specific application.

7304

OpenCNAngular Contact Ball BearingVerified matchAngular Contact Medium Series

Heavier load capacity than 7200. Used in gearboxes, electric motors, and industrial equipment requiring axial load support.

20 × 52 × 15mm

Open (no seal)

Cr 14.31 kN / C₀r 6.24 kN

11,900 rpm (grease)

NTN7304

Pricing not yet available for this part.

Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	20 mm
Outer diameter (D)	52 mm
Width (B)	15 mm
Dynamic load rating (C)	14.31 kN
Static load rating (C₀)	6.24 kN
Weight	89 g
Max speed (grease)	11,900 rpm
Max speed (oil)	15,300 rpm

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Why This Match Is Correct

✓Exact dimensional match (bore, OD, width)

✓Load ratings within tolerance

✓Seal type verified via manufacturer tables

✓Speed rating compatible

Cross-References

Every way this part is identified across brands and catalogs.

Tier-1 Brand Equivalents

Brand	Part Number	Seal	Clearance	Status
NTN	7304	Open	CN	Current
NSK	7304A	Open	CN	Verified
Timken	7304	Open	CN	Current
FAG	7304-B-TVP	Open	CN	Verified
SKF	7304 BEP	Open	CN	Verified

Legacy & Proprietary Numbers

SKF7304BNSK7304BKOYO7304BMRC7304PRHP7304BETNFLT7304BND30304SNR7304BSTEYR7304BEGCB/MP1ZKL7304BETNGSKF7304BECBMNSK7304BWKOYO7304BGMRC7304PDURHP7304BETNUSKF7304BECBPNSK7304BWGSKF7304BECBYSKF7304BEGAPSKF7304BEGCMSKF7304BEGYSKF7304BEPSKF7304BEY

Technical Details & Applications

Specification variations and common equipment types.

Internal Clearance

Normal Clearance (CN)

Standard radial internal clearance. Suitable for most applications under normal operating conditions.

TemperatureUp to ~70°C operating temperature

Seal Type

Open (No Seal)

No seals or shields. Allows external lubrication and cooling. Lowest friction, highest speed capability.

Avoid forDirty, dusty, or wet environments. Applications without planned lubrication maintenance.

Examples

Machine tool spindles
Gearboxes with oil bath lubrication
High-speed precision equipment

Where This Bearing Is Used

Electric motorsPumps and compressorsConveyor rollersAgricultural machineryFans and blowersGearboxesPower transmission equipmentWashing machinesPrinting pressesHVACAutomotive alternators and A/C compressors

Alternative Parts

Options if this exact part isn't what you need.

Same Geometry, Different Configuration

SKF Part Number	Seal Type	Clearance
7304 BEP	Open (No Seal)	CN
7304 BEP C3	Open (No Seal)	C3
7304 BE-2RZP	2RS	CN
7304 BE-2RZP C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.