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121856 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

121856: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, special_features: M 16X1.5, end_item_identification: 2355-01-542-7908 INTERIM VEHICLE - MOUNTED MINE DETECTOR. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-117-0693, 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
121856
NSN: 3110-00-117-0693
NIINs: 001170693, 015544486
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
special_featuresM 16X1.5
end_item_identification2355-01-542-7908 INTERIM VEHICLE - MOUNTED MINE DETECTOR
NSN3110-00-117-0693
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121856 · 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
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 72.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
OVERALL WIDTH17.00 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER72.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
SPECIAL FEATURESOUTER RING AND ROLLER ASSY,NO INNER RING
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
BORE DIAMETER44.01 MILLIMETERS NOMINAL MM
SUBSTITUTES & CROSS-REFERENCES 7
1269689Reference document
Same NSN cross-reference
Reference document — Secondary reference
F5141Reference document
Same NSN cross-reference
Reference document — Secondary reference
5238Reference document
Same NSN cross-reference
Reference document — Secondary reference
399368Reference document
Same NSN cross-reference
Reference document — Secondary reference
1207TSReference document
Same NSN cross-reference
Reference document — Secondary reference
19155Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121856?
121856 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 121856?
There are 7 known substitutes for 121856: 1269689, F5141, 5238 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121856?
121856 is cataloged in the U.S. Government catalog under NSN 3110-00-117-0693. 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.