What is the equivalent of a 30309-XL bearing?

The 30309-XL is a 45×100×27.25mm tapered roller bearing with verified equivalents across multiple brands: SKF 30309 J2/Q, FAG 30309-XL, NSK HR30309J, NTN 4T-30309. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 30309-XL bearing?

The 30309-XL bearing has a bore diameter of 45mm, outer diameter of 100mm, and width of 27.25mm. It has a dynamic load rating of 63.2 kN, static load rating of 39 kN, and weighs 660g. Maximum speed with grease lubrication is 4,200 rpm.

Can I replace a Timken 30309-XL with a SKF equivalent?

Yes. Timken and SKF bearings with the same ISO designation are dimensionally interchangeable. The 30309-XL (45×100×27.25mm) can be replaced with the equivalent SKF 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.

30309-XL

OpenCNTapered Roller BearingVerified matchTapered Roller — Medium, Narrow

Medium series tapered roller bearings with higher load capacity than 302xx for the same bore size. Used where heavier loads demand a more robust bearing cross-section.

45 × 100 × 27.25mm

Open (no seal)

Cr 63.2 kN / C₀r 39 kN

4,200 rpm (grease)

Timken3030945 × 100 × 27.25mm

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	45 mm
Outer diameter (D)	100 mm
Width (B)	27.25 mm
Dynamic load rating (C)	63.2 kN
Static load rating (C₀)	39 kN
Weight	660 g
Max speed (grease)	4,200 rpm
Max speed (oil)	5,700 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
Timken	30309	Open	CN	Verified
SKF	30309 J2/Q	Open	CN	Verified
FAG	30309-XL	Open	CN	Current
NSK	HR30309J	Open	CN	Verified
NTN	4T-30309	Open	CN	Verified

Legacy & Proprietary Numbers

CITR620005GPZ7309CITR620205GPZ7309A1

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
30309 J2/Q	Open (No Seal)	CN
30309 J2/Q C3	Open (No Seal)	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.