What is the equivalent of a 318KDD bearing?

The 318KDD is a 90×190×43mm ball bearing with verified equivalents across multiple brands: NSK 6318DDU, NTN 6318LLU, SKF 6318-2RS1, Timken 6318-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 318KDD bearing?

The 318KDD bearing has a bore diameter of 90mm, outer diameter of 190mm, and width of 43mm. It has a dynamic load rating of 143 kN, static load rating of 100 kN, and weighs 3520g. Maximum speed with grease lubrication is 3,600 rpm.

Can I replace a FAG 318KDD with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 318KDD (90×190×43mm) 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.

318KDD

2RSCNDeep Groove Ball Bearing

FAG6318-2RSR

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	90 mm
Outer diameter (D)	190 mm
Width (B)	43 mm
Dynamic load rating (C)	143 kN
Static load rating (C₀)	100 kN
Weight	3520 g
Max speed (grease)	3,600 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	6318-2RSR	2RS	CN	Probable
NSK	6318DDU	2RS	CN	Probable
NTN	6318LLU	2RS	CN	Probable
SKF	6318-2RS1	2RS	CN	Probable
Timken	6318-2RS	2RS	CN	Probable

Legacy & Proprietary Numbers

SKF6318STEYR6318NSK6318PEER6318ZWZ6318Fafnir318KMRC318-SRHP6318Federal1318FFKOYO6318New Departure88218NTN6318FBC6318FEDERAL1318FLT6318HOOVER7318MGM6318SNR6318ZKL6318SKF6318-2RSJEMSTEYR6318-2ZNSK6318C3EPEER6318-2RLDZWZ6318-2ZFafnir318KDMRC318-SFFRHP6318-2ZFederal1318SFKOYO6318ZNew Departure88518

Show all 61 cross-references

NTN6318ZSKF6318-2ZSTEYR6318C4NSK6318CMPEER6318-ZDZWZ6318M/C4Fafnir318KDDMRC318-SZZRHP6318ZSKF6318-2Z/C3STEYR6318M1/C3NSK6318MPEER6318-ZZDZWZ6318-ZSKF6318-2ZJEMSTEYR6318ZNSK6318ZSKF6318/C3STEYR6318Z/C3SKF6318/C3VL0241SKF6318/C4SKF6318/C4VL0241SKF6318JEMSKF6318M/C3SKF6318M/C3VL0241SKF6318M/C4SKF6318M/C4VL0241SKF6318M/P64VL0241SKF6318-ZSKF6318-Z/C3SKF6318-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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