What is the equivalent of a 6318-2RS1 bearing?

The 6318-2RS1 is a 90×190×43mm deep groove ball bearing with verified equivalents across multiple brands: NSK 6318DDU, NTN 6318LLU, SKF 6318-2RS1, Timken 6318-2RS. All equivalents share the same bore, outer diameter, width, and load ratings.

What are the dimensions of a 6318-2RS1 bearing?

The 6318-2RS1 bearing has a bore diameter of 90mm, outer diameter of 190mm, and width of 43mm. It has a dynamic load rating of 143 kN, static load rating of 100 kN, and weighs 3520g. Maximum speed with grease lubrication is 3,600 rpm.

Can I replace a FAG 6318-2RS1 with a NSK equivalent?

Yes. FAG and NSK bearings with the same ISO designation are dimensionally interchangeable. The 6318-2RS1 (90×190×43mm) can be replaced with the equivalent NSK part number as long as the seal type (2RS) and clearance class (CN) match. Always verify load ratings and speed limits for your specific application.

6318-2RS1

2RSCNDeep Groove Ball BearingVerified matchMedium Series

Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.

90 × 190 × 43mm

Rubber sealed → 2RS1 / 2RSR / DDU / LLU

Cr 143 kN / C₀r 100 kN

3,600 rpm (grease)

FAG6318-2RSR

Pricing not yet available for this part.

Match Details

The specifications and details for why this match is correct.

Specifications

Bore diameter (d)	90 mm
Outer diameter (D)	190 mm
Width (B)	43 mm
Dynamic load rating (C)	143 kN
Static load rating (C₀)	100 kN
Weight	3520 g
Max speed (grease)	3,600 rpm
Max speed (oil)	4,800 rpm

→ What does 2RS mean on a bearing?→ How to read a bearing part number

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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	6318-2RSR	2RS	CN	Verified
NSK	6318DDU	2RS	CN	Verified
NTN	6318LLU	2RS	CN	Verified
SKF	6318-2RS1	2RS	CN	Current
Timken	6318-2RS	2RS	CN	Verified

Legacy & Proprietary Numbers

SKF6318-2RSJEMNSK6318C3ESTEYR6318C4Fafnir318KMRC318-SPEER6318-2RLDFederal1318FFNew Departure88218ZWZ6318M/C4FEDERAL1318HOOVER7318KOYO6318ZNTN6318ZRHP6318ZSKF6318-2Z/C3NSK6318CMSTEYR6318M1/C3Fafnir318KDMRC318-SFFPEER6318-ZDFederal1318SFNew Departure88518ZWZ6318-ZSKF6318-2ZJEMNSK6318MSTEYR6318ZFafnir318KDDMRC318-SZZPEER6318-ZZDSKF6318/C3

Show all 44 cross-references

NSK6318ZSTEYR6318Z/C3SKF6318/C3VL0241SKF6318/C4SKF6318/C4VL0241SKF6318JEMSKF6318M/C3SKF6318M/C3VL0241SKF6318M/C4SKF6318M/C4VL0241SKF6318M/P64VL0241SKF6318-ZSKF6318-Z/C3SKF6318-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

Rubber Sealed (2RS)

Rubber contact seals on both sides. Superior protection from contaminants. Pre-lubricated, maintenance-free.

Avoid forVery high-speed applications (seal friction limits top speed). Environments exceeding 110°C.

Examples

Agricultural machinery
Conveyor rollers
Automotive components
Outdoor equipment
Washing machines

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
6318	Open (No Seal)	CN
6318 C3	Open (No Seal)	C3
6318-2Z	ZZ	CN
6318-2Z C3	ZZ	C3
6318-2RS1 C3	2RS	C3

Related Bearings

Adjacent sizes and cross-series bearings from our catalog.