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NTA3446 — RETAINER AND ROLLERS,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

NTA3446: RETAINER AND ROLLERS,BEARING.

The RETAINER AND ROLLERS,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 5140 ROLLER, bore_diameter: 2.1270 INCHES NOMINAL IN, overall_width: 0.0781 INCHES NOMINAL IN, outside_diameter: 2.8650 INCHES NOMINAL IN, special_features: IN LINE,THRUST TYPE, style_designator: RETAINER AND NEEDLE ROLLERS. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-142-5878, 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
NTA3446
NSN: 3110-00-142-5878
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL COMP 5140 ROLLER
bore_diameter2.1270 INCHES NOMINAL IN
overall_width0.0781 INCHES NOMINAL IN
outside_diameter2.8650 INCHES NOMINAL IN
special_featuresIN LINE,THRUST TYPE
style_designatorRETAINER AND NEEDLE ROLLERS
retainer_piece_quantity2
NSN3110-00-142-5878
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: NTA3446 · 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: RETAINER AND NEEDLE ROLLERS
•
OUTSIDE DIAMETER: 2.8650 INCHES NOMINAL IN
•
BORE DIAMETER: 2.1270 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 5140 ROLLER
•
RETAINER PIECE QUANTITY: 2
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRETAINER AND NEEDLE ROLLERS
OVERALL WIDTH0.0781 INCHES NOMINAL IN
OUTSIDE DIAMETER2.8650 INCHES NOMINAL IN
SPECIAL FEATURESIN LINE,THRUST TYPE
BORE DIAMETER2.1270 INCHES NOMINAL IN
MATERIALSTEEL COMP 5140 ROLLER
MATERIALSTEEL RETAINER
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
197228H1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NTA3446?
NTA3446 is a RETAINER AND ROLLERS,BEARING.
What parts can replace NTA3446?
There is 1 known substitute for NTA3446: 197228H1. Substitute compatibility should be verified for your specific system.
What is the NSN for NTA3446?
NTA3446 is cataloged in the U.S. Government catalog under NSN 3110-00-142-5878. 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.