PartsTable
Technical Data Sheet

RMU3/4 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

RMU3/4: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL BALL, bore_shape: STRAIGHT, bore_diameter: 0.7500 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND, inner_ring_width: 1.3430 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-108-6582, 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
RMU3/4
NSN: 3110-00-108-6582
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL BALL
bore_shapeSTRAIGHT
bore_diameter0.7500 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
inner_ring_width1.3430 INCHES NOMINAL IN
outer_ring_width14.0 MILLIMETERS NOMINAL MM
special_featuresECCENTRIC LOCKING COLLAR ON INNER RING ALSO DUST CAP AND RETAINING WIRE
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter1.8499 INCHES MINIMUM AND 1.8504 INCHES MAXIMUM IN
internal_fit-up_designationSTANDARD
NSN3110-00-108-6582
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: RMU3/4 · 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
•
OUTER RING WIDTH: 14.0 MILLIMETERS NOMINAL MM
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.8499 INCHES MINIMUM AND 1.8504 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS
OUTER RING WIDTH14.0 MILLIMETERS NOMINAL MM
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL OUTSIDE DIAMETER1.8499 INCHES MINIMUM AND 1.8504 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SPECIAL FEATURESECCENTRIC LOCKING COLLAR ON INNER RING ALSO DUST CAP AND RETAINING WIRE
BORE DIAMETER0.7500 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 5
SM1012MUA3/4Reference document
Same NSN cross-reference
Reference document — Secondary reference
RM3-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
163ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
914059Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3-4MUAFAFNSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RMU3/4?
RMU3/4 is a BEARING,BALL,ANNULAR.
What parts can replace RMU3/4?
There are 5 known substitutes for RMU3/4: SM1012MUA3/4, RM3-4, 163A and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RMU3/4?
RMU3/4 is cataloged in the U.S. Government catalog under NSN 3110-00-108-6582. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.