What is the equivalent of a 315-SFF bearing?

The 315-SFF is a 75×160×37mm ball bearing with verified equivalents across multiple brands: NSK 6315DDU, NTN 6315LLU, SKF 6315-2RS1, Timken 6315-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 315-SFF bearing?

The 315-SFF bearing has a bore diameter of 75mm, outer diameter of 160mm, and width of 37mm. It has a dynamic load rating of 113 kN, static load rating of 73.5 kN, and weighs 2100g. Maximum speed with grease lubrication is 4,500 rpm.

Can I replace a FAG 315-SFF with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 315-SFF (75×160×37mm) 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.

315-SFF

2RSCNDeep Groove Ball Bearing

FAG6315-2RSR

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	75 mm
Outer diameter (D)	160 mm
Width (B)	37 mm
Dynamic load rating (C)	113 kN
Static load rating (C₀)	73.5 kN
Weight	2100 g
Max speed (grease)	4,500 rpm
Max speed (oil)	—

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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	6315-2RSR	2RS	CN	Probable
NSK	6315DDU	2RS	CN	Probable
NTN	6315LLU	2RS	CN	Probable
SKF	6315-2RS1	2RS	CN	Probable
Timken	6315-2RS	2RS	CN	Probable

Legacy & Proprietary Numbers

SKF6315STEYR6315KOYO6315NSK6315PEER6315RHP6315ZWZ6315NTN6315Fafnir315KFBC6315FEDERAL1315FLT6315MRC315-SSNR6315Federal1315FFNew Departure88215HOOVER7315MGM6315ZKL6315SKF6315-2RS1/C3STEYR6315-2RS1/C3KOYO63152RSNSK6315C3EPEER6315-2RLDRHP6315-2ZZWZ6315-2ZNTN6315LUFafnir315KDFBC6315PFEDERAL1315F

Show all 89 cross-references

FLT6315NMRC315-SFFSNR6315NFederal1315SFNew Departure88515SKF6315-2RSJEMSTEYR6315-2ZKOYO6315DNSK6315DUPEER6315-C3RHP6315NZWZ6315MNTN6315NRFafnir315KDDFBC6315PPFEDERAL1315FFFLT6315NRMRC315-SZZSNR6315NRSKF6315-2ZSTEYR6315-2Z/C3KOYO6315DDNSK6315MPEER6315-RLDRHP6315NRZWZ6315NNTN6315ZSKF6315-2Z/C3STEYR6315C3KOYO6315NRNSK6315NRPEER6315-ZDRHP6315RSZWZ6315-ZSKF6315-2ZJEMSTEYR6315C4KOYO6315RSNSK6315ZPEER6315-ZZDRHP6315ZSKF6315/C3STEYR6315M1/C3KOYO6315ZSKF6315/C3VL0241STEYR6315NRKOYO6315ZZSKF6315/C4STEYR6315ZSKF6315JEMSTEYR6315Z/C3SKF6315M4/C3SKF6315M/C3SKF6315M/C3VL0241SKF6315M/C3VL0244SKF6315M/C4HVL0241SKF6315NRSKF6315-ZSKF6315-Z/C3SKF6315-ZJEM

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

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