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Technical Data Sheet
PartsTable / COMPONENT / ST-285
ST-285 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include guide: NOT INCLUDED, diameter: 0.402 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN, material: CARBIDE CUTTING EDGE TIP, body_width: 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN, bore_shape: STRAIGHT, flute_type: INSERTED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6448, 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
ST-285
NSN: 3110-00-155-6448
FSC: 3110
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
guideNOT INCLUDED
diameter0.402 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
materialCARBIDE CUTTING EDGE TIP
body_width0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN
bore_shapeSTRAIGHT
flute_typeINSERTED
shank_typeMORSE TAPER
body_height0.750 INCHES MAXIMUM IN
body_length0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM IN
reamer_typeSTEP
flute_designSPIRAL
flute_length2.250 INCHES NOMINAL IN
NSN3110-00-155-6448
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ST-285 · 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
•
LOAD DIRECTION: RADIAL
•
MATERIAL: STEEL OUTER RING
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
BORE DIAMETER: 85.00 MILLIMETERS NOMINAL MM
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONRADIAL
MATERIALSTEEL OUTER RING
MATERIALSTEEL SHIELD
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL INNER RING
MATERIALSTEEL BALL
BORE DIAMETER85.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
3146Interchangeable
interchangeable cross-reference
interchangeable
M1033Interchangeable
interchangeable cross-reference
interchangeable
LCVP8981PC1Interchangeable
interchangeable cross-reference
interchangeable
LCVP1298874-1Interchangeable
interchangeable cross-reference
interchangeable
KLE 3146Interchangeable
Wrench,lineman's
interchangeable
GGG-W-648 SZ5/8Interchangeable
Wrench,lineman's
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST-285?
ST-285 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace ST-285?
There are 23 known substitutes for ST-285: 3146, M1033, LCVP8981PC1 and 20 more. Substitute compatibility should be verified for your specific system.
Is ST-285 still available?
ST-285 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