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RA-7311-AR-3509 — RETAINER AND ROLLERS,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

RA-7311-AR-3509: RETAINER AND ROLLERS,BEARING.

The RETAINER AND ROLLERS,BEARING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY RETAINER, bore_diameter: 2.8120 INCHES NOMINAL IN, overall_width: 1.2800 INCHES NOMINAL IN, outside_diameter: 4.0780 INCHES NOMINAL IN, special_features: RETAINERSILVER PLATED, style_designator: RADIAL, RETAINER AND CYLINDRICAL ROLLERS. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-142-6046, 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
RA-7311-AR-3509
NSN: 3110-00-142-6046
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
bore_diameter2.8120 INCHES NOMINAL IN
overall_width1.2800 INCHES NOMINAL IN
outside_diameter4.0780 INCHES NOMINAL IN
special_featuresRETAINERSILVER PLATED
style_designatorRADIAL, RETAINER AND CYLINDRICAL ROLLERS
retainer_piece_quantity1
NSN3110-00-142-6046
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: RA-7311-AR-3509 · 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
•
STYLE DESIGNATOR: RADIAL, RETAINER AND CYLINDRICAL ROLLERS
•
OUTSIDE DIAMETER: 4.0780 INCHES NOMINAL IN
•
BORE DIAMETER: 2.8120 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY RETAINER
•
RETAINER PIECE QUANTITY: 1
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRADIAL, RETAINER AND CYLINDRICAL ROLLERS
OVERALL WIDTH1.2800 INCHES NOMINAL IN
OUTSIDE DIAMETER4.0780 INCHES NOMINAL IN
SPECIAL FEATURESRETAINERSILVER PLATED
BORE DIAMETER2.8120 INCHES NOMINAL IN
MATERIALCOPPER ALLOY RETAINER
MATERIALSTEEL COMP E52100 ROLLER
RETAINER PIECE QUANTITY1
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 3
A5941Reference document
Same NSN cross-reference
Reference document — Secondary reference
EP7311AR3508Reference document
Same NSN cross-reference
Reference document — Secondary reference
K674887-11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RA-7311-AR-3509?
RA-7311-AR-3509 is a RETAINER AND ROLLERS,BEARING.
What parts can replace RA-7311-AR-3509?
There are 3 known substitutes for RA-7311-AR-3509: A5941, EP7311AR3508, K674887-11. Substitute compatibility should be verified for your specific system.
What is the NSN for RA-7311-AR-3509?
RA-7311-AR-3509 is cataloged in the U.S. Government catalog under NSN 3110-00-142-6046. 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.