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28317 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
Esselte · MRO · MRO_GENERAL
PRODUCT OVERVIEW

28317: CUP,TAPERED ROLLER BEARING.

Flat files for filing and protection of hole punched documents. Key specifications include material: STEEL OVERALL, overall_width: 0.6250 INCHES NOMINAL IN, outside_diameter: 3.1510 INCHES NOMINAL IN, special_features: INCLUDES 4 SPUR GEARS AND HOUSING, WEAPONS SYSTEM AIRCRAFT, HERCULES C-130, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0564, 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
MRO→ MRO_GENERAL→ 28317
NSN: 3110-00-100-0564
NIINs: 001000564, 003732681, 012721611, 014228760
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.6250 INCHES NOMINAL IN
outside_diameter3.1510 INCHES NOMINAL IN
special_featuresINCLUDES 4 SPUR GEARS AND HOUSING, WEAPONS SYSTEM AIRCRAFT, HERCULES C-130
style_designatorNORMAL ANGLE
backface_corner_radius0.0625 INCHES NOMINAL IN
end_item_identification1680-01-387-6739
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0564
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 28317 · Esselte ⚠ 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 3.1510 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0625 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
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
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.6250 INCHES NOMINAL IN
OUTSIDE DIAMETER3.1510 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0625 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
BT28317Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B4222Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 28317?
28317 is a CUP,TAPERED ROLLER BEARING manufactured by Esselte. It is classified as a MRO (MRO_GENERAL).
What parts can replace 28317?
There are 2 known substitutes for 28317: BT28317, B4222. Substitute compatibility should be verified for your specific system.
What is the NSN for 28317?
28317 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0564. 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.