What is the equivalent of a 6318M1-C3 bearing?

The 6318M1-C3 is a 90×190×43mm deep groove ball bearing with verified equivalents across multiple brands: NSK 6318 C3E, NTN 6318 C3, SKF 6318 C3, Timken 6318 C3. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6318M1-C3 bearing?

The 6318M1-C3 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 6318M1-C3 with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 6318M1-C3 (90×190×43mm) can be replaced with the equivalent NSK part number as long as the seal type (open) and clearance class (C3) match. Always verify load ratings and speed limits for your specific application.

6318M1-C3

OpenC3Deep Groove Ball BearingMedium Series

Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.

FAG6318-C3

Pricing not yet available for this part.

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)	4,800 rpm

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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-C3	Open	C3	Probable
NSK	6318 C3E	Open	C3	Probable
NTN	6318 C3	Open	C3	Probable
SKF	6318 C3	Open	C3	Probable
Timken	6318 C3	Open	C3	Probable

Legacy & Proprietary Numbers

SKF6318-2RSJEMNSK6318C3ESTEYR6318C4Fafnir318KMRC318-SPEER6318-2RLDZWZ6318-2RSFederal1318FFNew Departure88218FEDERAL1318HOOVER7318KOYO6318ZNTN6318ZRHP6318ZSKF6318-2Z/C3NSK6318CMSTEYR6318M1/C3Fafnir318KDMRC318-SFFPEER6318-ZDZWZ6318M/C4Federal1318SFNew Departure88518SKF6318-2ZJEMNSK6318MSTEYR6318ZFafnir318KDDMRC318-SZZPEER6318-ZZDZWZ6318-Z

Show all 45 cross-references

SKF6318/C3NSK6318ZSTEYR6318Z/C3SKF6318/C3VL0241SKF6318/C4SKF6318/C4VL0241SKF6318JEMSKF6318M/C3SKF6318M/C3VL0241SKF6318M/C4SKF6318M/C4VL0241SKF6318M/P64VL0241SKF6318-ZSKF6318-Z/C3SKF6318-ZJEM

Technical Details & Applications

Specification variations and common equipment types.

Internal Clearance

Greater Than Normal (C3)

Increased radial internal clearance. Required when bearings operate at elevated temperatures or with tight shaft fits.

Temperature70-150°C operating temperature

Seal Type

Open (No Seal)

No seals or shields. Allows external lubrication and cooling. Lowest friction, highest speed capability.

Avoid forDirty, dusty, or wet environments. Applications without planned lubrication maintenance.

Examples

Machine tool spindles
Gearboxes with oil bath lubrication
High-speed precision equipment

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
6318	Open (No Seal)	CN
6318 C3	Open (No Seal)	C3
6318-2Z	ZZ	CN
6318-2Z C3	ZZ	C3
6318-2RS1	2RS	CN
6318-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.