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121186 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

121186: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL, style_designator: OPEN END, WRAP AROUND SHELL, end_item_identification: LAMP,INCANDESCENT;P/N 35W CUSTOM TO SPEC W. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-586-8305, 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
121186
NSN: 3110-00-586-8305
NIINs: 005868305, 015769403
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: Z4732 — HAULMARK TRAILERS (AUSTRALIA) PTY LTD (AUS)
SPECIFICATIONS
materialSTEEL
style_designatorOPEN END, WRAP AROUND SHELL
end_item_identificationLAMP,INCANDESCENT;P/N 35W CUSTOM TO SPEC W
NSN3110-00-586-8305
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121186 · 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESDUTY CLASS LM SERIES
END ITEM IDENTIFICATIONMRAP - COMMON NSN - USED ON MAXXPRO CAT I AND 33 OTHER WEAPON SYSTEMS
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 10
1789755Reference document
Same NSN cross-reference
Reference document — Secondary reference
M782AReference document
Same NSN cross-reference
Reference document — Secondary reference
10A7051Reference document
Same NSN cross-reference
Reference document — Secondary reference
4735-60B10Reference document
Same NSN cross-reference
Reference document — Secondary reference
LM-48548Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
4254317Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121186?
121186 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 121186?
There are 10 known substitutes for 121186: 1789755, M782A, 10A7051 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121186?
121186 is cataloged in the U.S. Government catalog under NSN 3110-00-586-8305. 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.