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A538DDE8510 — BEARING,BALL,AIRFRAME

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A538DDE8510: BEARING,BALL,AIRFRAME.

The BEARING,BALL,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C OUTER RING, bore_diameter: 0.6243 INCHES MINIMUM AND 0.6257 INCHES MAXIMUM IN, alignment_type: RIGID, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-178-6040, 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
A538DDE8510
NSN: 3110-01-178-6040
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OUTER RING
bore_diameter0.6243 INCHES MINIMUM AND 0.6257 INCHES MAXIMUM IN
alignment_typeRIGID
load_directionRADIAL
shield_quantity2
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
special_featuresPACKED DRY,NO LUBRICANT
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
internal_clearance0.0010 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
overall_outside_diameter1.0615 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
standard_tolerance_designationAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
NSN3110-01-178-6040
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A538DDE8510 · 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
•
OUTER RING WIDTH: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
•
INTERNAL CLEARANCE: 0.0010 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: SINGLE ROW INNER RING EXTENDED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
•
OVERALL OUTSIDE DIAMETER: 1.0615 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OUTER RING WIDTH0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
INTERNAL CLEARANCE0.0010 INCHES MINIMUM RADIAL AND 0.0020 INCHES MAXIMUM RADIAL IN
SHIELD QUANTITY2
STYLE DESIGNATORSINGLE ROW INNER RING EXTENDED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE INNER RING
OVERALL OUTSIDE DIAMETER1.0615 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
ALIGNMENT TYPERIGID
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 2
B538ZZ ST10Reference document
Same NSN cross-reference
Reference document — Secondary reference
BACB10A537Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A538DDE8510?
A538DDE8510 is a BEARING,BALL,AIRFRAME.
What parts can replace A538DDE8510?
There are 2 known substitutes for A538DDE8510: B538ZZ ST10, BACB10A537. Substitute compatibility should be verified for your specific system.
What is the NSN for A538DDE8510?
A538DDE8510 is cataloged in the U.S. Government catalog under NSN 3110-01-178-6040. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.