PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 718644-2
718644-2 ✓ 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,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 2.5620 INCHES MINIMUM AND 2.5625 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN, outer_ring_width: 0.3120 INCHES NOMINAL IN, special_features: RADIAL CLEARANCE 0.0003 IN. TO 0.0007 IN.,BOREAND OD TO BE CONCENTRIC WITHIN 0.0005 IN.

TOTAL INDICATOR READING IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-678-9060, 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
718644-2
NSN: 3110-00-678-9060
FSC: 3110
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter2.5620 INCHES MINIMUM AND 2.5625 INCHES MAXIMUM IN
load_directionRADIAL
inner_ring_width0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
outer_ring_width0.3120 INCHES NOMINAL IN
special_featuresRADIAL CLEARANCE 0.0003 IN. TO 0.0007 IN.,BOREAND OD TO BE CONCENTRIC WITHIN 0.0005 IN. TOTAL INDICATOR READING IN
style_designatorSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
overall_outside_diameter3.2495 INCHES MINIMUM AND 3.2500 INCHES MAXIMUM IN
retainer_fabrication_methodCOILED
NSN3110-00-678-9060
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 718644-2 · 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
•
LOAD DIRECTION: RADIAL
•
OVERALL OUTSIDE DIAMETER: 3.2495 INCHES MINIMUM AND 3.2500 INCHES MAXIMUM IN
•
OUTER RING WIDTH: 0.3120 INCHES NOMINAL IN
•
BORE DIAMETER: 2.5620 INCHES MINIMUM AND 2.5625 INCHES MAXIMUM IN
•
INNER RING WIDTH: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
RETAINER FABRICATION METHOD: COILED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
LOAD DIRECTIONRADIAL
OVERALL OUTSIDE DIAMETER3.2495 INCHES MINIMUM AND 3.2500 INCHES MAXIMUM IN
OUTER RING WIDTH0.3120 INCHES NOMINAL IN
SPECIAL FEATURESRADIAL CLEARANCE 0.0003 IN. TO 0.0007 IN.,BOREAND OD TO BE CONCENTRIC WITHIN 0.0005 IN. TOTAL INDICATOR READING IN
BORE DIAMETER2.5620 INCHES MINIMUM AND 2.5625 INCHES MAXIMUM IN
INNER RING WIDTH0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
RETAINER FABRICATION METHODCOILED
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
3190Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
C12297Interchangeable
interchangeable cross-reference
interchangeable
110 1-13/32Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYEInterchangeable
interchangeable cross-reference
interchangeable
18-06042-1MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 718644-2?
718644-2 is a BEARING,BALL,AIRFRAME.
What parts can replace 718644-2?
There are 17 known substitutes for 718644-2: 3190, 00044, C12297 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 718644-2?
718644-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-678-9060. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026