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Technical Data Sheet
PartsTable / COMPONENT / 12005-4
12005-4 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE SEAL, bore_diameter: 2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2500 INCHES NOMINAL IN, style_designator: SINGLE ROW INNER RING EXTENDED BOTH SIDES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-837-5112, 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
12005-4
NSN: 3110-00-837-5112
FSC: 3110
CAGE: 78710 — TRIUMPH CONTROLS, LLC DBA TRIUMPH CONTROLS, LLC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
bore_diameter2.3122 INCHES MINIMUM AND 2.3128 INCHES MAXIMUM IN
seal_quantity2
load_directionRADIAL
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2500 INCHES NOMINAL IN
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
bearing_seal_typeCONTACT
surface_treatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
lubrication_materialGREASE
overall_outside_diameter2.8735 INCHES MINIMUM AND 2.8750 INCHES MAXIMUM IN
lubrication_material_document_and_classificationASUM 100,AMERICAN OIL CO. MFR REF SINGLE MATERIAL RESPONSE
NSN3110-00-837-5112
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12005-4 · 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
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE SEAL
•
SURFACE TREATMENT: CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
•
STYLE DESIGNATOR: SINGLE ROW INNER RING EXTENDED BOTH SIDES
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL: GREASE
•
SEAL QUANTITY: 2
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
INNER RING WIDTH: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAL
SURFACE TREATMENTCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
STYLE DESIGNATORSINGLE ROW INNER RING EXTENDED BOTH SIDES
BEARING SEAL TYPECONTACT
LUBRICATION MATERIALGREASE
SEAL QUANTITY2
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
INNER RING WIDTH0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONASUM 100,AMERICAN OIL CO. MFR REF SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
2955Interchangeable
interchangeable cross-reference
interchangeable
2955 LInterchangeable
interchangeable cross-reference
interchangeable
21S11Interchangeable
interchangeable cross-reference
interchangeable
654745Interchangeable
interchangeable cross-reference
interchangeable
770218Interchangeable
interchangeable cross-reference
interchangeable
175-103Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12005-4?
12005-4 is a BEARING,BALL,AIRFRAME.
What parts can replace 12005-4?
There are 12 known substitutes for 12005-4: 2955, 2955 L, 21S11 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12005-4?
12005-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-837-5112. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026