What is the equivalent of a NJ312E-M6-C3 bearing?

The NJ312E-M6-C3 is a 60×130×31mm cylindrical roller bearing with verified equivalents across multiple brands: NSK NJ312W C3, NTN NJ312ET2 C3, SKF NJ 312 ECP/C3, Timken NJ312EM/C3. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a NJ312E-M6-C3 bearing?

The NJ312E-M6-C3 bearing has a bore diameter of 60mm, outer diameter of 130mm, and width of 31mm. It has a dynamic load rating of 124 kN, static load rating of 126 kN, and weighs 1800g. Maximum speed with grease lubrication is 3,800 rpm.

Can I replace a FAG NJ312E-M6-C3 with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The NJ312E-M6-C3 (60×130×31mm) 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.

NJ312E-M6-C3

OpenC3Cylindrical Roller BearingVerified matchCylindrical Roller — Medium Series (NJ)

Medium cross-section cylindrical roller bearings (NJ-type) with one-direction axial restraint. Higher load capacity than NJ200 series. Same dimensions as NU300 but with semi-locating capability.

60 × 130 × 31mm

Open (no seal)

Cr 124 kN / C₀r 126 kN

3,800 rpm (grease)

FAGNJ312-E-TVP2-C3

Pricing not yet available for this part.

Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	60 mm
Outer diameter (D)	130 mm
Width (B)	31 mm
Dynamic load rating (C)	124 kN
Static load rating (C₀)	126 kN
Weight	1800 g
Max speed (grease)	3,800 rpm
Max speed (oil)	—

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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
FAG	NJ312-E-TVP2-C3	Open	C3	Probable
NSK	NJ312W C3	Open	C3	Probable
NTN	NJ312ET2 C3	Open	C3	Probable
SKF	NJ 312 ECP/C3	Open	C3	Probable
Timken	NJ312EM/C3	Open	C3	Probable

Legacy & Proprietary Numbers

SKFNJ312NTNNJ312STEYRNJ312KOYONJ312NSKNJ312SNRNJ312ZKLNJ312SKFNJ312ECJNTNNJ312ESTEYRNJ312E/M6/C3SKFNJ312ECJ/C3SKFNJ312ECM/C3SKFNJ312ECM/C4VA301SKFNJ312ECPSKFNJ312ECP/C3SKFNJ312ECP/C4

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

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