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MA488 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

MA488: BEARING,ROLLER,TAPERED.

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include special_features: THE PRECISION-VARIABLE POWER SCOPE (P-VPS) ACCURACY 1ST TAN LEVEL (RH) PN: MA488., end_item_identification: 1240016864791 AND 1240016865486 TELESCOPE,STRAIGHT., part_name_assigned_by_controlling_agency: P-VPS STANDARD LEVEL, CYLINDRICAL, CIRCULAR VIAL. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-138-4566, 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
MA488
NSN: 3110-01-138-4566
NIINs: 011384566, 016867828
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
special_featuresTHE PRECISION-VARIABLE POWER SCOPE (P-VPS) ACCURACY 1ST TAN LEVEL (RH) PN: MA488.
end_item_identification1240016864791 AND 1240016865486 TELESCOPE,STRAIGHT.
part_name_assigned_by_controlling_agencyP-VPS STANDARD LEVEL, CYLINDRICAL, CIRCULAR VIAL
NSN3110-01-138-4566
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MA488 · 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
•
CUP WIDTH: 1.2500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
•
OVERALL OUTSIDE DIAMETER: 6.3750 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1300 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.6875 INCHES NOMINAL IN
•
ALIGNMENT TYPE: RIGID
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
CUP WIDTH1.2500 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
OVERALL WIDTH1.9375 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER6.3750 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1300 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.6875 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
CONE WIDTH1.8125 INCHES NOMINAL IN
SPECIAL FEATURESCUP CLASS 2 TOLERANCE AND CONE CLASS 7 TOLERANCE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MA488?
MA488 is a BEARING,ROLLER,TAPERED.
What is the NSN for MA488?
MA488 is cataloged in the U.S. Government catalog under NSN 3110-01-138-4566. 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.