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Technical Data Sheet
PartsTable / COMPONENT / 121856
121856 ✓ 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,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 Federal Logistics Information System (FLIS) 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
FSC: 3110
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
•
MATERIAL: STEEL OVERALL
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
•
BORE DIAMETER: 44.01 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, CYLINDRICAL INNER RING, CYLINDRICAL OUTER RING WITH TWO ROLLER RETAINMENT RINGS ON OUTER, SEPARABLE
SPECIAL FEATURESOUTER RING AND ROLLER ASSY,NO INNER RING
OVERALL WIDTH17.00 MILLIMETERS NOMINAL MM
BORE DIAMETER44.01 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER72.00 MILLIMETERS NOMINAL MM
LOCATING FEATURENONLOCATING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
7228368P007Interchangeable
interchangeable cross-reference
interchangeable
204902-3Interchangeable
interchangeable cross-reference
interchangeable
100R-1020P95Interchangeable
interchangeable cross-reference
interchangeable
4Q-250Interchangeable
interchangeable cross-reference
interchangeable
LT-250Interchangeable
interchangeable cross-reference
interchangeable
BT1985Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121856?
121856 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 121856?
There are 30 known substitutes for 121856: 7228368P007, 204902-3, 100R-1020P95 and 27 more. Substitute compatibility should be verified for your specific system.
Is 121856 still available?
121856 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026