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FA 31788 — RETAINER AND ROLLERS,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

FA 31788: RETAINER AND ROLLERS,BEARING.

The RETAINER AND ROLLERS,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 2.5020 INCHES NOMINAL IN, outside_diameter: 3.2400 INCHES NOMINAL IN, style_designator: RETAINER AND ROLLERS, THRUST, rolling_element_diameter: 0.0781 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-018-4035, 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
FA 31788
NSN: 3110-00-018-4035
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter2.5020 INCHES NOMINAL IN
outside_diameter3.2400 INCHES NOMINAL IN
style_designatorRETAINER AND ROLLERS, THRUST
retainer_piece_quantity2
rolling_element_diameter0.0781 INCHES NOMINAL IN
NSN3110-00-018-4035
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FA 31788 · 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
•
ROLLING ELEMENT DIAMETER: 0.0781 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RETAINER AND ROLLERS, THRUST
•
OUTSIDE DIAMETER: 3.2400 INCHES NOMINAL IN
•
BORE DIAMETER: 2.5020 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
RETAINER PIECE QUANTITY: 2
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.0781 INCHES NOMINAL IN
STYLE DESIGNATORRETAINER AND ROLLERS, THRUST
OUTSIDE DIAMETER3.2400 INCHES NOMINAL IN
BORE DIAMETER2.5020 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
RETAINER PIECE QUANTITY2
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 1
3110PL1304986Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FA 31788?
FA 31788 is a RETAINER AND ROLLERS,BEARING.
What parts can replace FA 31788?
There is 1 known substitute for FA 31788: 3110PL1304986. Substitute compatibility should be verified for your specific system.
What is the NSN for FA 31788?
FA 31788 is cataloged in the U.S. Government catalog under NSN 3110-00-018-4035. 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.