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Technical Data Sheet
PartsTable / COMPONENT / MR1908D
MR1908D ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 ROLLER, bore_shape: STRAIGHT, bore_diameter: 1.5748 INCHES NOMINAL IN, overall_width: 0.4724 INCHES NOMINAL IN, surface_finish: GROUND, locating_feature: NONLOCATING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-191-6804, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MR1908D
NSN: 3110-01-191-6804
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 ROLLER
bore_shapeSTRAIGHT
bore_diameter1.5748 INCHES NOMINAL IN
overall_width0.4724 INCHES NOMINAL IN
surface_finishGROUND
locating_featureNONLOCATING
style_designatorSINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE
internal_clearance0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN
end_item_identificationB-1B AIR FRAME
overall_outside_diameter2.4409 INCHES NOMINAL IN
retainer_fabrication_methodMACHINED
standard_tolerance_designationRBEC NO.1
NSN3110-01-191-6804
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MR1908D · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERNAL CLEARANCE: 0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN
•
STYLE DESIGNATOR: SINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE
•
MATERIAL: STEEL COMP E52100 ROLLER
•
LOCATING FEATURE: NONLOCATING
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL CLEARANCE0.0018 INCHES MINIMUM RADIAL AND 0.0028 INCHES MAXIMUM RADIAL IN
STYLE DESIGNATORSINGLE ROW, TWO-DIRECTION LOCATING, TWO LIP INNER RING, TWO LIP OUTER RING, SEPARABLE
MATERIALSTEEL COMP E52100 ROLLER
MATERIALSTEEL COMP E52100 OUTER RING
MATERIALSTEEL COMP E52100 INNER RING
END ITEM IDENTIFICATIONB-1B AIR FRAME
MATERIALCOPPER ALLOY CAGE
LOCATING FEATURENONLOCATING
OVERALL WIDTH0.4724 INCHES NOMINAL IN
RETAINER FABRICATION METHODMACHINED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MS24693S7Interchangeable
interchangeable cross-reference
interchangeable
A13200E536Interchangeable
interchangeable cross-reference
interchangeable
40631Interchangeable
interchangeable cross-reference
interchangeable
2115955Interchangeable
interchangeable cross-reference
interchangeable
1024429Interchangeable
interchangeable cross-reference
interchangeable
406312Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MR1908D?
MR1908D is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace MR1908D?
There are 21 known substitutes for MR1908D: MS24693S7, A13200E536, 40631 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MR1908D?
MR1908D is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-191-6804. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026