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98400-98788 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

98400-98788: 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 material: STEEL OVERALL, cup_width: 1.3750 INCHES NOMINAL IN, cone_width: 1.9375 INCHES NOMINAL IN, bore_diameter: 4.0000 INCHES NOMINAL IN, overall_width: 2.0772 INCHES NOMINAL IN, standout_width: 0.7022 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-5838, 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
98400-98788
NSN: 3110-00-100-5838
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.3750 INCHES NOMINAL IN
cone_width1.9375 INCHES NOMINAL IN
bore_diameter4.0000 INCHES NOMINAL IN
overall_width2.0772 INCHES NOMINAL IN
standout_width0.7022 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE, STEEP ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.1250 INCHES NOMINAL IN
overall_outside_diameter7.8740 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-5838
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 98400-98788 · 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: 1.3750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, STEEP ANGLE
•
OVERALL OUTSIDE DIAMETER: 7.8740 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
STANDOUT WIDTH: 0.7022 INCHES NOMINAL IN
•
CONE WIDTH: 1.9375 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
CUP WIDTH1.3750 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, STEEP ANGLE
OVERALL WIDTH2.0772 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER7.8740 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.7022 INCHES NOMINAL IN
CONE WIDTH1.9375 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER4.0000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 9
98788-98400Reference document
Same NSN cross-reference
Reference document — Secondary reference
3511Reference document
Same NSN cross-reference
Reference document — Secondary reference
3307Reference document
Same NSN cross-reference
Reference document — Secondary reference
5557479Reference document
Same NSN cross-reference
Reference document — Secondary reference
5557478Reference document
Same NSN cross-reference
Reference document — Secondary reference
105-5PC16Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 98400-98788?
98400-98788 is a BEARING,ROLLER,TAPERED.
What parts can replace 98400-98788?
There are 9 known substitutes for 98400-98788: 98788-98400, 3511, 3307 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 98400-98788?
98400-98788 is cataloged in the U.S. Government catalog under NSN 3110-00-100-5838. 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.