What is the equivalent of a 317-SFF bearing?

The 317-SFF is a 85×180×41mm ball bearing with verified equivalents across multiple brands: NSK 6317DDU, NTN 6317LLU, SKF 6317-2RS1, Timken 6317-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 317-SFF bearing?

The 317-SFF bearing has a bore diameter of 85mm, outer diameter of 180mm, and width of 41mm. It has a dynamic load rating of 133 kN, static load rating of 90 kN, and weighs 3000g. Maximum speed with grease lubrication is 3,800 rpm.

Can I replace a FAG 317-SFF with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 317-SFF (85×180×41mm) 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.

317-SFF

2RSCNDeep Groove Ball Bearing

FAG6317-2RSR

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	85 mm
Outer diameter (D)	180 mm
Width (B)	41 mm
Dynamic load rating (C)	133 kN
Static load rating (C₀)	90 kN
Weight	3000 g
Max speed (grease)	3,800 rpm
Max speed (oil)	—

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

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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	6317-2RSR	2RS	CN	Probable
NSK	6317DDU	2RS	CN	Probable
NTN	6317LLU	2RS	CN	Probable
SKF	6317-2RS1	2RS	CN	Probable
Timken	6317-2RS	2RS	CN	Probable

Legacy & Proprietary Numbers

SKF6317STEYR6317NSK6317PEER6317KOYO6317ZWZ6317Fafnir317KMRC317-SNTN6317RHP6317Federal1317FFNew Departure88217FBC6317FEDERAL1317FLT6317HOOVER7317MGM6317SNR6317ZKL6317SKF6317-2RS1/C3STEYR6317-2RS1/C3NSK6317C3EPEER6317-2RLDKOYO63172RSZWZ6317-2ZFafnir317KDMRC317-SFFNTN6317ZRHP6317-2ZFederal1317SF

Show all 66 cross-references

New Departure88517SKF6317-2RSJEMSTEYR6317-2ZNSK6317CMPEER6317-2RLD-NRKOYO6317ZZWZ6317MFafnir317KDDMRC317-SZZNTN6317ZZRHP6317ZSKF6317-2ZSTEYR6317-2Z/C3NSK6317MPEER6317-ZDKOYO6317ZZZWZ6317-ZSKF6317-2Z/C3STEYR6317C3NSK6317ZPEER6317-ZZDSKF6317-2ZJEMSTEYR6317C4NSK6317ZZSKF6317/C3STEYR6317ZSKF6317/C3VL0241SKF6317/C4SKF6317/C4S1SKF6317JEMSKF6317M/C3SKF6317M/C3VL0241SKF6317M/C3VL0244SKF6317/P63SKF6317-ZSKF6317-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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