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Technical Data Sheet
PartsTable / COMPONENT / MR1904D3
MR1904D3 ✓ 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: 0.7870 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN, overall_width: 0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN, surface_finish: GROUND, locating_feature: ONE DIRECTION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-727-5663, 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
MR1904D3
NSN: 3110-00-727-5663
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 ROLLER
bore_shapeSTRAIGHT
bore_diameter0.7870 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN
overall_width0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN
surface_finishGROUND
locating_featureONE DIRECTION
style_designatorSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
internal_clearance0.0021 INCHES MINIMUM RADIAL AND 0.0031 INCHES MAXIMUM RADIAL IN
overall_outside_diameter1.4562 INCHES MINIMUM AND 1.4567 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
standard_tolerance_designationRBEC NO.1
NSN3110-00-727-5663
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MR1904D3 · 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
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
RETAINER FABRICATION METHOD: MACHINED
•
MATERIAL: STEEL COMP E52100 INNER RING
•
STYLE DESIGNATOR: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.3493 INCHES MINIMUM AND 0.3543 INCHES MAXIMUM IN
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
RETAINER FABRICATION METHODMACHINED
MATERIALSTEEL COMP E52100 INNER RING
MATERIALSTEEL COMP E52100 OUTER RING
MATERIALSTEEL COMP E52100 ROLLER
STYLE DESIGNATORSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
MATERIALCOPPER ALLOY RETAINER
BORE DIAMETER0.7870 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
16734AInterchangeable
interchangeable cross-reference
interchangeable
MF40601ITEM8Interchangeable
interchangeable cross-reference
interchangeable
B32701DPC7Interchangeable
interchangeable cross-reference
interchangeable
623L001PC10Interchangeable
interchangeable cross-reference
interchangeable
N2562-43643-1Interchangeable
interchangeable cross-reference
interchangeable
G1959-60Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MR1904D3?
MR1904D3 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace MR1904D3?
There are 18 known substitutes for MR1904D3: 16734A, MF40601ITEM8, B32701DPC7 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MR1904D3?
MR1904D3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-727-5663. 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