What is the equivalent of a 131257 bearing?

The 131257 is a 55×90×18mm self-aligning ball bearing with verified equivalents across multiple brands: FAG 6011, NSK 6011, NTN 6011, Timken 6011. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 131257 bearing?

The 131257 bearing has a bore diameter of 55mm, outer diameter of 90mm, and width of 18mm. It has a dynamic load rating of 29.6 kN, static load rating of 21.2 kN, and weighs 371g. Maximum speed with grease lubrication is 10,000 rpm.

Can I replace a SKF 131257 with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 131257 (55×90×18mm) 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.

131257

OpenCNDeep Groove Ball BearingSelf-Aligning Medium Series

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

SKF601155 × 90 × 18mm

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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)	90 mm
Width (B)	18 mm
Dynamic load rating (C)	29.6 kN
Static load rating (C₀)	21.2 kN
Weight	371 g
Max speed (grease)	10,000 rpm
Max speed (oil)	5,695 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
SKF	6011	Open	CN	Probable
FAG	6011	Open	CN	Probable
NSK	6011	Open	CN	Verified
NTN	6011	Open	CN	Probable
Timken	6011	Open	CN	Probable

Legacy & Proprietary Numbers

SKF6011-2RSNSK6011CMPEER6011-2RLDFLT6011.2RSSNR6011ESTEYR6011-2ZKOYO60112RSNTN6011LLUZWZ6011-2RSNWG6011.2ZRHP6011-2RSGPZ60111NACHI6011ZSASC131257SKF6011-2RS1NSK6011DDUPEER6011-2RLD-C3FLT6011RSSNR6011EESTEYR6011A/2Z/C3KOYO6011RSNTN6011LUZWZ6011-2ZNWG6011ZRHP6011-2ZSKF6011-2RS1/C3NSK6011DDUCMPEER6011-C3FLT6011ZSNR6011J30

Show all 55 cross-references

STEYR6011RS1KOYO6011ZNTN6011ZZWZ6011-ZSKF6011-2RSJEMNSK6011DUPEER6011-ZDFLT6011ZZSNR6011ZSTEYR6011ZSKF6011-2ZNSK6011MPEER6011-ZZDSKF6011-2Z/C3NSK6011ZPEER6011-ZZD-C3SKF6011-2ZJEMSKF6011/C3SKF6011/C4SKF6011JEMSKF6011-RSSKF6011-RS1SKF6011-RS1/C4SKF6011-ZSKF6011-ZJEM

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
1312 ETN9	Open (No Seal)	CN
1312 ETN9 C3	Open (No Seal)	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.