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81T3553 — Technical Data Sheet

✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, overall_width: 0.6730 INCHES NOMINAL IN, outside_diameter: 2.2477 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0469 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the Federal Logistics Information System under NSN 3110-00-143-7579, 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
81T3553
NSN: 3110-00-143-7579
FSC: 3110
CAGE: 57526 — FORD MOTOR COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.6730 INCHES NOMINAL IN
outside_diameter2.2477 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0469 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-143-7579
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 81T3553 · 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
•
BACKFACE CORNER RADIUS: 0.0469 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
OUTSIDE DIAMETER: 2.2477 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS
MATERIALSTEEL OVERALL
BACKFACE CORNER RADIUS0.0469 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.6730 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OUTSIDE DIAMETER2.2477 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
RJ6CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WS506InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
42AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
637539InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
14CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4DP2033APC16X3-4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81T3553?
81T3553 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 81T3553?
There are 20 known substitutes for 81T3553: RJ6C, WS506, 42A and 17 more. Substitute compatibility should be verified for your specific system.
Is 81T3553 still available?
81T3553 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: September 2026