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Technical Data Sheet
PartsTable / COMPONENT / 2 1/2 4-OH
2 1/2 4-OH ✓ 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 2 1/2 4-OH is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-902-1641, 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
2 1/2 4-OH
NSN: 3110-00-902-1641
FSC: 3110
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
Part Number2 1/2 4-OH
NSN3110-00-902-1641
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 2 1/2 4-OH · 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
•
SURFACE FINISH: GROUND
•
BORE DIAMETER: 0.1562 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
STYLE DESIGNATOR: NON-SEPARABLE, OPEN END, DRAWN SHELL
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
BORE DIAMETER0.1562 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
OVERALL WIDTH0.2500 INCHES NOMINAL IN
STYLE DESIGNATORNON-SEPARABLE, OPEN END, DRAWN SHELL
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
MATERIALSTEEL OVERALL
SPECIAL FEATURESOIL HOLE IN OUTER RING
ALIGNMENT TYPERIGID
OVERALL OUTSIDE DIAMETER0.2812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
535670Interchangeable
interchangeable cross-reference
interchangeable
534769Interchangeable
interchangeable cross-reference
interchangeable
293273Interchangeable
interchangeable cross-reference
interchangeable
B21-24Interchangeable
interchangeable cross-reference
interchangeable
75-805390-1Interchangeable
interchangeable cross-reference
interchangeable
GP18-24P1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2 1/2 4-OH?
2 1/2 4-OH is a 2 1/2 4-OH.
What parts can replace 2 1/2 4-OH?
There are 24 known substitutes for 2 1/2 4-OH: 535670, 534769, 293273 and 21 more. Substitute compatibility should be verified for your specific system.
Is 2 1/2 4-OH still available?
2 1/2 4-OH 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