What is the equivalent of a 6309-2RS bearing?

The 6309-2RS is a 45×100×25mm deep groove ball bearing with verified equivalents across multiple brands: FAG 6309-2RSR, NSK 6309DDU, NTN 6309LLU, Timken 6309-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6309-2RS bearing?

The 6309-2RS bearing has a bore diameter of 45mm, outer diameter of 100mm, and width of 25mm. It has a dynamic load rating of 55.3 kN, static load rating of 31.5 kN, and weighs 817g. Maximum speed with grease lubrication is 9,500 rpm.

Can I replace a SKF 6309-2RS with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 6309-2RS (45×100×25mm) can be replaced with the equivalent FAG part number as long as the seal type (2RS) and clearance class (CN) match. Always verify load ratings and speed limits for your specific application.

6309-2RS

2RSCNDeep Groove Ball BearingVerified matchMedium Series

Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.

45 × 100 × 25mm

Rubber sealed → 2RS1 / 2RSR / DDU / LLU

Cr 55.3 kN / C₀r 31.5 kN

9,500 rpm (grease)

SKF6309-2RS145 × 100 × 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)	25 mm
Dynamic load rating (C)	55.3 kN
Static load rating (C₀)	31.5 kN
Weight	817 g
Max speed (grease)	9,500 rpm
Max speed (oil)	15,000 rpm

→ What does 2RS mean on a bearing?→ How to read a bearing part number

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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
SKF	6309-2RS1	2RS	CN	Verified
FAG	6309-2RSR	2RS	CN	Probable
NSK	6309DDU	2RS	CN	Verified
NTN	6309LLU	2RS	CN	Verified
Timken	6309-2RS	2RS	CN	Current

Legacy & Proprietary Numbers

SKF6309-2RS1/C3STEYR6309-2GPEER6309-2RLDNSK6309C3EKOYO63092RSSNR6309EFLT6309.2RSNWG6309.2RSRHP6309.2RSFEDERAL1309NTN6309LLFBC6309PFafnir309KMGM6309.2ZMRC309-SZWZ6309NFederal1309FFHOOVER7309New Departure88209ZKL6309NFIAT621653GAZ63-1802060NISSAN32203-61500STEY6317URB6309-2ZP6ELSKF6309-2RS1/C3GJNSTEYR6309-2RS1/C3PEER6309-2RLD-C3NSK6309DDKOYO6309D

Show all 133 cross-references

SNR6309EEFLT6309NNWG6309.2ZRHP6309.2ZFEDERAL1309CGNTN6309LUFBC6309PPFafnir309KDMGM6309NMRC309-SFFZWZ6309NRFederal1309SFHOOVER7309GNew Departure88509ZKL6309ZSKF6309-2RS1/C3HT51STEYR6309-2Z/C3PEER6309-C3NSK6309DDUCMKOYO6309DDSNR6309NFLT6309NRNWG6309NRHP6309NFEDERAL1309FNTN6309NRFBC6309PSRFafnir309KDDMGM6309ZMRC309-SZZZWZ6309-ZNSKF6309-2RS1/C3WTSTEYR6309C3PEER6309-NRNSK6309DUKOYO6309NRSNR6309NC3FLT6309RSNWG6309RSRHP6309NRFEDERAL1309FFNTN6309ZFBC6309SRSKF6309-2RSJEMSTEYR6309C4PEER6309-RLDNSK6309DUCMKOYO6309RSSNR6309NJ30FLT6309ZNWG6309ZRHP6309RSFEDERAL1309GFNTN6309ZNRSKF6309-2Z/C3STEYR6309GPEER6309-RLD-C3NSK6309MKOYO6309ZSNR6309NRFLT6309ZNRNWG6309ZNRHP6309ZSKF6309-2Z/C3GJNSTEYR6309M1PEER6309-ZDNSK6309NRKOYO6309ZNRSNR6309ZSKF6309-2Z/C3HTSTEYR6309NPEER6309-ZD-C3NSK6309ZSKF6309-2Z/C3HT51STEYR6309NRPEER6309-ZZDNSK6309ZNRSKF6309-2ZJEMSTEYR6309NR/C3PEER6309-ZZD-C3SKF6309/C2STEYR6309RS1SKF6309/C3STEYR6309ZSKF6309/C4SKF6309JEMSKF6309M4SKF6309M4A/C3SKF6309M/C3SKF6309NSKF6309NRSKF6309NR/C3SKF6309NRJEMSKF6309-RSSKF6309-RS1SKF6309-RS1/C3SKF6309-RSJEMSKF6309-ZSKF6309-Z/C3SKF6309-Z/C4SKF6309-Z/C5SKF6309-ZJEMSKF6309-ZNR

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

Rubber Sealed (2RS)

Rubber contact seals on both sides. Superior protection from contaminants. Pre-lubricated, maintenance-free.

Avoid forVery high-speed applications (seal friction limits top speed). Environments exceeding 110°C.

Examples

Agricultural machinery
Conveyor rollers
Automotive components
Outdoor equipment
Washing machines

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
6309	Open (No Seal)	CN
6309 C3	Open (No Seal)	C3
6309-2Z	ZZ	CN
6309-2Z C3	ZZ	C3
6309-2RS1	2RS	CN
6309-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.