What is the equivalent of a 1311 bearing?

The 1311 is a 55×120×24mm self-aligning ball bearing with verified equivalents across multiple brands: FAG 1311-TVH, NSK 1311, NTN 1311, Timken 1311. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 1311 bearing?

The 1311 bearing has a bore diameter of 55mm, outer diameter of 120mm, and width of 24mm. It has a dynamic load rating of 37.2 kN, static load rating of 19.9 kN, and weighs 840g. Maximum speed with grease lubrication is 4,760 rpm.

Can I replace a SKF 1311 with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 1311 (55×120×24mm) can be replaced with the equivalent FAG 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.

1311

OpenCNSelf-Aligning Ball BearingVerified matchSelf-Aligning Medium Series

Heavier self-aligning ball bearings with higher load capacity than 1200 series. For applications with significant misalignment and moderate radial loads.

55 × 120 × 24mm

Open (no seal)

Cr 37.2 kN / C₀r 19.9 kN

4,760 rpm (grease)

SKF1311 ETN955 × 120 × 24mm

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	55 mm
Outer diameter (D)	120 mm
Width (B)	24 mm
Dynamic load rating (C)	37.2 kN
Static load rating (C₀)	19.9 kN
Weight	840 g
Max speed (grease)	4,760 rpm
Max speed (oil)	5,950 rpm

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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
SKF	1311 ETN9	Open	CN	Verified
FAG	1311-TVH	Open	CN	Verified
NSK	1311	Open	CN	Current
NTN	1311	Open	CN	Current
Timken	1311	Open	CN	Current

Legacy & Proprietary Numbers

SKF1311EKTN9/C3MRC1311ESNR1311G15SKF1311ETN9SKF1311ETN9/C3

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

Alternative Parts

Options if this exact part isn't what you need.

Same Geometry, Different Configuration

SKF Part Number	Seal Type	Clearance
1311 ETN9	Open (No Seal)	CN
1311 ETN9 C3	Open (No Seal)	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.