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Technical Data Sheet
PartsTable / COMPONENT / MS27640-8
MS27640-8 ✓ 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 COMP E52100 OR STEEL COMP E51100 BALL, bore_diameter: 0.5000 INCHES NOMINAL IN, load_direction: RADIAL, inner_ring_width: 0.6200 INCHES NOMINAL IN, outer_ring_width: 0.5000 INCHES NOMINAL IN, style_designator: SINGLE ROW INNER RING EXTENDED BOTH SIDES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-027-3401, 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
MS27640-8
NSN: 3110-00-027-3401
FSC: 3110
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OR STEEL COMP E51100 BALL
bore_diameter0.5000 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
inner_ring_width0.6200 INCHES NOMINAL IN
outer_ring_width0.5000 INCHES NOMINAL IN
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
bearing_seal_typeCONTACT
surface_treatmentCADMIUM OUTER RING
overall_outside_diameter1.6875 INCHES NOMINAL IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES BALL
NSN3110-00-027-3401
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS27640-8 · 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
•
INNER RING WIDTH: 0.6200 INCHES NOMINAL IN
•
BEARING SEAL TYPE: CONTACT
•
LOAD DIRECTION: RADIAL
•
OUTER RING WIDTH: 0.5000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
•
SEAL QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
INNER RING WIDTH0.6200 INCHES NOMINAL IN
SPECIAL FEATURES80 PCT. FULL OF MIL-G-81322,INTERNAL RADIAL CLEARANCE 0.000.4- 0.0010 IN.,HEAT TREAT RINGS AND BALLS TO ROCKWELL C 60 TO 66 AND STABILIZED FOR OPERATION AT 250 DEG. F,RADIAL AND LATERAL ECCENTRICITY INNER RING 0.0010 IN. OUTER RING 0.0016 IN. IN
BEARING SEAL TYPECONTACT
LOAD DIRECTIONRADIAL
OUTER RING WIDTH0.5000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
SEAL QUANTITY2
MATERIALSTEEL CORROSION RESISTING RETAINER
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
K10ANG25Interchangeable
interchangeable cross-reference
interchangeable
AS27640Interchangeable
interchangeable cross-reference
interchangeable
KP10FS464Interchangeable
interchangeable cross-reference
interchangeable
KP3Interchangeable
interchangeable cross-reference
interchangeable
KP3FS160Interchangeable
interchangeable cross-reference
interchangeable
KP3LInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27640-8?
MS27640-8 is a BEARING,BALL,AIRFRAME.
What parts can replace MS27640-8?
There are 29 known substitutes for MS27640-8: K10ANG25, AS27640, KP10FS464 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS27640-8?
MS27640-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-027-3401. 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