What is the equivalent of a 12-11 bearing?

The 12-11 is a 55×100×21mm ball bearing with verified equivalents across multiple brands: FAG 1211-TVH, NSK 1211, NTN 1211, Timken 1211. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 12-11 bearing?

The 12-11 bearing has a bore diameter of 55mm, outer diameter of 100mm, and width of 21mm. It has a dynamic load rating of 28.6 kN, static load rating of 15.3 kN, and weighs 600g. Maximum speed with grease lubrication is 5,600 rpm.

Can I replace a SKF 12-11 with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 12-11 (55×100×21mm) 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.

12-11

OpenCNSelf-Aligning Ball BearingVerified match

55 × 100 × 21mm

Open (no seal)

Cr 28.6 kN / C₀r 15.3 kN

5,600 rpm (grease)

SKF1211 ETN955 × 100 × 21mm

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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)	100 mm
Width (B)	21 mm
Dynamic load rating (C)	28.6 kN
Static load rating (C₀)	15.3 kN
Weight	600 g
Max speed (grease)	5,600 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
SKF	1211 ETN9	Open	CN	Verified
FAG	1211-TVH	Open	CN	Verified
NSK	1211	Open	CN	Verified
NTN	1211	Open	CN	Verified
Timken	1211	Open	CN	Verified

Legacy & Proprietary Numbers

SKF1211EKTN9/C3MRC1211ERHP1211KJC3SKF1211ETN9SKF1211ETN9/C3SKF1211K/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

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