What is the equivalent of a 6308-2RSR bearing?

The 6308-2RSR is a 40×90×23mm deep groove ball bearing with verified equivalents across multiple brands: NSK 6308DDU, FAG 6308-2RSR, NTN 6308LLU, Timken 6308-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6308-2RSR bearing?

The 6308-2RSR bearing has a bore diameter of 40mm, outer diameter of 90mm, and width of 23mm. It has a dynamic load rating of 42.3 kN, static load rating of 24 kN, and weighs 611g. Maximum speed with grease lubrication is 11,000 rpm.

Can I replace a SKF 6308-2RSR with a NSK equivalent?

Yes. SKF and NSK bearings with the same ISO designation are dimensionally interchangeable. The 6308-2RSR (40×90×23mm) can be replaced with the equivalent NSK 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.

6308-2RSR

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.

40 × 90 × 23mm

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

Cr 42.3 kN / C₀r 24 kN

11,000 rpm (grease)

SKF6308-2RS140 × 90 × 23mm

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	40 mm
Outer diameter (D)	90 mm
Width (B)	23 mm
Dynamic load rating (C)	42.3 kN
Static load rating (C₀)	24 kN
Weight	611 g
Max speed (grease)	11,000 rpm
Max speed (oil)	17,000 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	6308-2RS1	2RS	CN	Verified
NSK	6308DDU	2RS	CN	Verified
FAG	6308-2RSR	2RS	CN	Current
NTN	6308LLU	2RS	CN	Verified
Timken	6308-2RS	2RS	CN	Verified

Legacy & Proprietary Numbers

SKF6308-2RS1/C3NSK6308C3ESTEYR6308-2GKOYO63082RSFLT6308.2RSPEER6308-2RLDSNR6308ENWG6308.2RSRHP6308.2RSFBC6308PNTN6308LLMGM6308.2ZZWZ6308-2RSNFafnir308KFEDERAL1308MRC308-SCITR620211Federal1308FFNew Departure88208ZKL6308NCONT60122DAG631781DENN601395FORD12005545HOOVER7308NACHI6308-2NSEOPEL720005ROVER512000SKF6308-2RS1/C3GJNNSK6308CM

Show all 141 cross-references

STEYR6308-2RS1/C3KOYO6308DFLT6308NPEER6308-C3SNR6308EENWG6308.2ZRHP6308.2ZFBC6308PPNTN6308NRMGM6308NZWZ6308-2RZFafnir308KDFEDERAL1308CGMRC308-SFFCITR6308ACFederal1308SFNew Departure88508ZKL6308ZSKF6308-2RS1/C3HT51NSK6308DDSTEYR6308-2Z/C3KOYO6308DDFLT6308NRPEER6308-RLDSNR6308J40NWG6308NRHP6308NFBC6308PPSRNTN6308ZMGM6308RSZWZ6308NFafnir308KDDFEDERAL1308FMRC308-SZZSKF6308-2RS1/C3WTNSK6308DDUC3ESTEYR6308-2ZNRKOYO6308NFLT6308RSPEER6308-ZDSNR6308NNWG6308RSRHP6308NRFBC6308PSRNTN6308ZNRMGM6308ZZWZ6308-ZNSKF6308-2RSJEMNSK6308DDUCMSTEYR6308C4KOYO6308NRFLT6308ZPEER6308-ZD-C3SNR6308NRNWG6308ZRHP6308RSFBC6308SRNTN6308ZZSKF6308-2Z/C3NSK6308DUSTEYR6308GKOYO6308RSFLT6308ZNRPEER6308-ZZDSNR6308ZNWG6308ZNRHP6308ZSKF6308-2Z/C3GJNNSK6308MSTEYR6308NKOYO6308ZFLT6308ZZPEER6308-ZZD-C3SNR6308ZZSKF6308-2Z/C3HTNSK6308NSTEYR6308NRKOYO6308ZNRSKF6308-2Z/C3HT51NSK6308NRSTEYR6308NR/C3KOYO6308ZZSKF6308-2Z/C3WTNSK6308ZSTEYR6308ZSKF6308-2Z/C4NSK6308ZCMSTEYR6308ZNRSKF6308-2ZJEMNSK6308ZNRSKF6308-2ZNRNSK6308ZZSKF6308/C3SKF6308/C4SKF6308JEMSKF6308MA/C3SKF6308M/C4VL0241SKF6308NSKF6308NJEMSKF6308NRSKF6308NR/C3SKF6308-RSSKF6308-RS1SKF6308-RS1/C3SKF6308-RSJEMSKF6308-ZSKF6308-Z/C3SKF6308-Z/C4SKF6308-Z/C5SKF6308-ZJEMSKF6308-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
6308	Open (No Seal)	CN
6308 C3	Open (No Seal)	C3
6308-2Z	ZZ	CN
6308-2Z C3	ZZ	C3
6308-2RS1	2RS	CN
6308-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.