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3TKVRSS-21-28-108 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

3TKVRSS-21-28-108: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C BALL, bore_diameter: 1.3122 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.2812 INCHES NOMINAL IN, outer_ring_width: 0.2500 INCHES NOMINAL IN, special_features: C135 ACFT. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-148-5152, 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
3TKVRSS-21-28-108
NSN: 3110-01-148-5152
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 40920 — MPB CORP DIV TIMKEN SUPER PRECISION (USA)
SPECIFICATIONS
materialSTEEL COMP 440C BALL
bore_diameter1.3122 INCHES MINIMUM AND 1.3125 INCHES MAXIMUM IN
load_directionRADIAL
shield_quantity2
inner_ring_width0.2812 INCHES NOMINAL IN
outer_ring_width0.2500 INCHES NOMINAL IN
special_featuresC135 ACFT
style_designatorSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
features_providedSNAP RING-GROOVE MOUNTING
internal_clearance0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
lubrication_materialGREASE
overall_outside_diameter1.7496 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
NSN3110-01-148-5152
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3TKVRSS-21-28-108 · 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
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
OVERALL OUTSIDE DIAMETER: 1.7496 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
INTERNAL CLEARANCE0.0005 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN
SHIELD QUANTITY2
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL OUTSIDE DIAMETER1.7496 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING
LOAD DIRECTIONRADIAL
SPECIAL FEATURESC135 ACFT
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
2501725-5Reference 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 3TKVRSS-21-28-108?
3TKVRSS-21-28-108 is a BEARING,BALL,AIRFRAME.
What parts can replace 3TKVRSS-21-28-108?
There is 1 known substitute for 3TKVRSS-21-28-108: 2501725-5. Substitute compatibility should be verified for your specific system.
What is the NSN for 3TKVRSS-21-28-108?
3TKVRSS-21-28-108 is cataloged in the U.S. Government catalog under NSN 3110-01-148-5152. 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.