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605AS121-2 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

605AS121-2: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C BALL, bore_diameter: 2.0622 INCHES MINIMUM AND 2.0625 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.4050 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN, outer_ring_width: 0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN, special_features: BARR1R COATED M1L-STD-1334,0.0008-0.0013 IN. RADIAL CLEARANCE,MINUS 54 DEG TO PLUG 175 DEG C OPERATING TEMP IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-006-2133, 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
605AS121-2
NSN: 3110-00-006-2133
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 06144 — INDUSTRIAL TECTONICS BEARINGS CORPORATION DBA RBC BEARINGS INC DIV INDUSTRIAL TECTONICS BEARINGS (USA)
SPECIFICATIONS
materialSTEEL COMP 440C BALL
bore_diameter2.0622 INCHES MINIMUM AND 2.0625 INCHES MAXIMUM IN
load_directionRADIAL
shield_quantity2
inner_ring_width0.4050 INCHES MINIMUM AND 0.4060 INCHES MAXIMUM IN
outer_ring_width0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
special_featuresBARR1R COATED M1L-STD-1334,0.0008-0.0013 IN. RADIAL CLEARANCE,MINUS 54 DEG TO PLUG 175 DEG C OPERATING TEMP IN
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
surface_treatmentPASSIVATE SHIELD
lubrication_materialGREASE
overall_outside_diameter2.6247 INCHES MINIMUM AND 2.6250 INCHES MAXIMUM IN
standard_tolerance_designationABEC NO.5
NSN3110-00-006-2133
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 605AS121-2 · 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: 0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: SINGLE ROW INNER RING EXTENDED BOTH SIDES
TECHNICAL CHARACTERISTICS
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE INNER RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHIELD
SHIELD QUANTITY2
STYLE DESIGNATORSINGLE ROW INNER RING EXTENDED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OUTER RING
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 2
7064FReference document
Same NSN cross-reference
Reference document — Secondary reference
3TKBSS33-42A27Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 605AS121-2?
605AS121-2 is a BEARING,BALL,AIRFRAME.
What parts can replace 605AS121-2?
There are 2 known substitutes for 605AS121-2: 7064F, 3TKBSS33-42A27. Substitute compatibility should be verified for your specific system.
What is the NSN for 605AS121-2?
605AS121-2 is cataloged in the U.S. Government catalog under NSN 3110-00-006-2133. This indicates validated use in U.S. government and defense supply chains.
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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.