What is the equivalent of a NJ306ECP bearing?

The NJ306ECP is a 30×72×19mm cylindrical roller bearing with verified equivalents across multiple brands: NSK NJ306W, NTN NJ306ET2, SKF NJ 306 ECP, Timken NJ306EM. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a NJ306ECP bearing?

The NJ306ECP bearing has a bore diameter of 30mm, outer diameter of 72mm, and width of 19mm. It has a dynamic load rating of 53 kN, static load rating of 50 kN, and weighs 398g. Maximum speed with grease lubrication is 7,500 rpm.

Can I replace a FAG NJ306ECP with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The NJ306ECP (30×72×19mm) can be replaced with the equivalent NSK part number as long as the seal type (open) and clearance class (CN) match. Always verify load ratings and speed limits for your specific application.

NJ306ECP

OpenCNCylindrical 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.

30 × 72 × 19mm

Open (no seal)

Cr 53 kN / C₀r 50 kN

7,500 rpm (grease)

FAGNJ306-E-TVP2

Pricing not yet available for this part.

Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	30 mm
Outer diameter (D)	72 mm
Width (B)	19 mm
Dynamic load rating (C)	53 kN
Static load rating (C₀)	50 kN
Weight	398 g
Max speed (grease)	7,500 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	NJ306-E-TVP2	Open	CN	Verified
NSK	NJ306W	Open	CN	Verified
NTN	NJ306ET2	Open	CN	Verified
SKF	NJ 306 ECP	Open	CN	Verified
Timken	NJ306EM	Open	CN	Verified

Legacy & Proprietary Numbers

SKFNJ306STEYRNJ306NTNNJ306ENASA620412KOYONJ306NSKNJ306SNRNJ306ZKLNJ306SKFNJ306EC/B910STEYRNJ306E/TGP1NTNNJ306ESKFNJ306ECJSTEYRNJ306E/TGP1/C4SKFNJ306ECJ/C3SKFNJ306ECP

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

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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