What is the equivalent of a 6310LLU bearing?

The 6310LLU is a 50×110×27mm deep groove ball bearing with verified equivalents across multiple brands: FAG 6310-2RSR, NSK 6310DDU, NTN 6310LLU, Timken 6310-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6310LLU bearing?

The 6310LLU bearing has a bore diameter of 50mm, outer diameter of 110mm, and width of 27mm. It has a dynamic load rating of 65 kN, static load rating of 38 kN, and weighs 1070g. Maximum speed with grease lubrication is 8,500 rpm.

Can I replace a SKF 6310LLU with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 6310LLU (50×110×27mm) 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.

6310LLU

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.

50 × 110 × 27mm

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

Cr 65 kN / C₀r 38 kN

8,500 rpm (grease)

SKF6310-2RS150 × 110 × 27mm

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	50 mm
Outer diameter (D)	110 mm
Width (B)	27 mm
Dynamic load rating (C)	65 kN
Static load rating (C₀)	38 kN
Weight	1070 g
Max speed (grease)	8,500 rpm
Max speed (oil)	13,000 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	6310-2RS1	2RS	CN	Verified
FAG	6310-2RSR	2RS	CN	Probable
NSK	6310DDU	2RS	CN	Verified
NTN	6310LLU	2RS	CN	Current
Timken	6310-2RS	2RS	CN	Probable

Legacy & Proprietary Numbers

SKF6310-2RS1/C3NSK6310C3EPEER6310-2RLDFLT6310.2RSKOYO63102RSNTN6310LLSTEYR6310-2GNWG6310.2RSSNR6310ERHP6310.2RSFBC6310PFEDERAL1310Fafnir310KMGM6310.2ZMRC310-SFederal1310FFHOOVER7310New Departure88210ZKL6310NCONT60118FAUN6003010KBC6310DDMAZDA1304-17-205SOME73200845ZWZ6310-ZNRSKF6310-2RS1/C3WTNSK6310CMPEER6310-2RLD-C3FLT6310.2RSNRKOYO6310D

Show all 126 cross-references

NTN6310LUSTEYR6310-2Z/C3NWG6310.2ZSNR6310EERHP6310NFBC6310PPFEDERAL1310CGFafnir310KDMGM6310NMRC310-SFFFederal1310SFHOOVER7310GNew Departure88510ZKL6310ZSKF6310-2RS1NRNSK6310DDPEER6310-C3FLT6310NKOYO6310DDNTN6310NRSTEYR6310C3NWG6310NSNR6310NRHP6310NRFBC6310PSRFEDERAL1310FFafnir310KDDMGM6310ZMRC310-SZZSKF6310-2RSJEMNSK6310DDUC3EPEER6310-NRFLT6310NRKOYO6310NRNTN6310ZSTEYR6310GNWG6310RSSNR6310NRRHP6310RSFBC6310SRFEDERAL1310FFSKF6310-2RSNRNSK6310DDUCMPEER6310-RLDFLT6310RSKOYO6310RSNTN6310ZNRSTEYR6310NRNWG6310ZSNR6310ZRHP6310ZSKF6310-2Z/C3NSK6310DDUNRPEER6310-ZDFLT6310ZKOYO6310ZNTN6310ZZSTEYR6310ZNWG6310ZNSNR6310ZZSKF6310-2Z/C3WTNSK6310DUPEER6310-ZD-C3FLT6310ZNRKOYO6310ZNRNTN6310ZZC3STEYR6310ZNRSKF6310-2ZJEMNSK6310MPEER6310-ZZDFLT6310ZZKOYO6310ZZSKF6310/C3NSK6310NPEER6310-ZZD-C3SKF6310/C4NSK6310NRSKF6310JEMNSK6310ZSKF6310MA/C3NSK6310ZC3ESKF6310M/C3NSK6310ZNRSKF6310M/C3VL0241NSK6310ZZSKF6310N/C3SKF6310NRSKF6310NRJEMSKF6310-RSSKF6310-RS1SKF6310-RSJEMSKF6310-ZSKF6310-Z/C2SKF6310-Z/C3SKF6310-ZJEMSKF6310-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
6310	Open (No Seal)	CN
6310 C3	Open (No Seal)	C3
6310-2Z	ZZ	CN
6310-2Z C3	ZZ	C3
6310-2RS1	2RS	CN
6310-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.