What is the equivalent of a 6003C3 bearing?

The 6003C3 is a 17×35×10mm deep groove ball bearing with verified equivalents across multiple brands: FAG 6003-C3, NSK 6003 C3E, NTN 6003 C3, Timken 6003 C3. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6003C3 bearing?

The 6003C3 bearing has a bore diameter of 17mm, outer diameter of 35mm, and width of 10mm. It has a dynamic load rating of 6.37 kN, static load rating of 3.25 kN, and weighs 37.5g. Maximum speed with grease lubrication is 28,000 rpm.

Can I replace a SKF 6003C3 with a FAG equivalent?

Yes. SKF and FAG bearings with the same ISO designation are dimensionally interchangeable. The 6003C3 (17×35×10mm) can be replaced with the equivalent FAG 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.

6003C3

OpenC3Deep Groove Ball BearingVerified matchExtra Light Series

Compact bearings for space-constrained applications. Lower load capacity but higher speed ratings.

17 × 35 × 10mm

Open (no seal)

Cr 6.37 kN / C₀r 3.25 kN

28,000 rpm (grease)

SKF6003 C317 × 35 × 10mm

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Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	17 mm
Outer diameter (D)	35 mm
Width (B)	10 mm
Dynamic load rating (C)	6.37 kN
Static load rating (C₀)	3.25 kN
Weight	37.5 g
Max speed (grease)	28,000 rpm
Max speed (oil)	45,000 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	6003 C3	Open	C3	Verified
FAG	6003-C3	Open	C3	Probable
NSK	6003 C3E	Open	C3	Verified
NTN	6003 C3	Open	C3	Verified
Timken	6003 C3	Open	C3	Probable

Legacy & Proprietary Numbers

SKF6003-2RSNSK6003C3EPEER6003-2RLDNTN6003LLBFLT6003.2RSKOYO60032RSSNR6003EGMN6003-2RSGPZ60103MGM6003.2ZNACHI6003ZNWG6003.2ZRHP6003-2RSSTEYR6003C3RIV13030SKF6003-2RS1/C3NSK6003CMPEER6003-2RLD-C3NTN6003LLUFLT6003RSKOYO6003RSSNR6003EEGMN6003RSGPZ6-103MGM6003ZNACHI6003ZZNWG6003ZRHP6003RSSTEYR6003ZSKF6003-2RS1/QE6

Show all 83 cross-references

NSK6003DDPEER6003-2RLD-NRNTN6003LUFLT6003ZKOYO6003ZSNR6003ZGMN6003ZSKF6003-2RSHNSK6003DDUPEER6003-RLDNTN6003ZFLT6003ZNRKOYO6003ZZSNR6003ZZSKF6003-2RSH/C3NSK6003DDUCMPEER6003-ZDNTN6003ZZFLT6003ZZSKF6003-2RSJEMNSK6003DUPEER6003-ZD-C3NTN6003ZZC3SKF6003-2RSLNSK6003VVPEER6003-ZZDSKF6003-2RSLTN9/C3VT162NSK6003ZPEER6003-ZZD-C3SKF6003-2RSNRNSK6003ZC3SKF6003-2RZNSK6003ZCMSKF6003-2Z/C3NSK6003ZZSKF6003-2Z/C3QE6NSK6003ZZC3ESKF6003-2ZJEMSKF6003-2ZNRSKF6003/C3SKF6003/C3QE6SKF6003JEMSKF6003/QE6SKF6003-RSSKF6003-RS1SKF6003-RS1/C3SKF6003-RSHSKF6003-RSJEMSKF6003TN9SKF6003-ZSKF6003-Z/C3SKF6003-ZJEMSKF6003-ZNR

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

Alternative Parts

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

Same Geometry, Different Configuration

SKF Part Number	Seal Type	Clearance
6003	Open (No Seal)	CN
6003 C3	Open (No Seal)	C3
6003-2Z	ZZ	CN
6003-2Z C3	ZZ	C3
6003-2RS1	2RS	CN
6003-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.