What is the equivalent of a 30204-J2-Q-C3 bearing?

The 30204-J2-Q-C3 is a 20×47×15.25mm tapered roller bearing with verified equivalents across multiple brands: NSK HR30204J C3, NTN 4T-30204 C3, SKF 30204 J2/Q C3, Timken 30204 C3. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 30204-J2-Q-C3 bearing?

The 30204-J2-Q-C3 bearing has a bore diameter of 20mm, outer diameter of 47mm, and width of 15.25mm. It has a dynamic load rating of 15.2 kN, static load rating of 8.5 kN, and weighs 70g. Maximum speed with grease lubrication is 10,200 rpm.

Can I replace a FAG 30204-J2-Q-C3 with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 30204-J2-Q-C3 (20×47×15.25mm) can be replaced with the equivalent NSK part number as long as the seal type (open) and clearance class (C3) match. Always verify load ratings and speed limits for your specific application.

30204-J2-Q-C3

OpenC3Tapered Roller BearingTapered Roller — Light, Narrow

Light series metric tapered roller bearings with narrow width. The most common tapered roller series for general-purpose applications. Handles combined radial and axial loads with high rigidity.

FAG30204-XL C3

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)	47 mm
Width (B)	15.25 mm
Dynamic load rating (C)	15.2 kN
Static load rating (C₀)	8.5 kN
Weight	70 g
Max speed (grease)	10,200 rpm
Max speed (oil)	13,200 rpm

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Cross-References

Every way this part is identified across brands and catalogs.

Tier-1 Brand Equivalents

Brand	Part Number	Seal	Clearance	Status
FAG	30204-XL C3	Open	C3	Probable
NSK	HR30204J C3	Open	C3	Probable
NTN	4T-30204 C3	Open	C3	Probable
SKF	30204 J2/Q C3	Open	C3	Probable
Timken	30204 C3	Open	C3	Probable

Legacy & Proprietary Numbers

FLT30204GPZ7204KOYO30204MGM30204MITS30204NSK30204NTN30204SKF30204STEYR30204TIMKEN30204WAF70-204-0

Technical Details & Applications

Specification variations and common equipment types.

Internal Clearance

Greater Than Normal (C3)

Increased radial internal clearance. Required when bearings operate at elevated temperatures or with tight shaft fits.

Temperature70-150°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
30204 J2/Q	Open (No Seal)	CN
30204 J2/Q C3	Open (No Seal)	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.