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K-387 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

K-387: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 0.8640 INCHES NOMINAL IN, bore_diameter: 2.2500 INCHES NOMINAL IN, end_item_name: VALVE,BALL, special_features: SEAT MATERIAL IS BRONZE AND SYNTHETIC RUBBER, style_designator: NORMAL ANGLE. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0228, 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
K-387
NSN: 3110-00-100-0228
NIINs: 001000228, 015390495
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: F0272 — SKF FRANCE (FRA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width0.8640 INCHES NOMINAL IN
bore_diameter2.2500 INCHES NOMINAL IN
end_item_nameVALVE,BALL
special_featuresSEAT MATERIAL IS BRONZE AND SYNTHETIC RUBBER
style_designatorNORMAL ANGLE
component_quantity5
cone_corner_radius0.0937 INCHES NOMINAL IN
supply_items_and_quantities1 VALVE SEAT, 4 O-RINGS
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0228
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K-387 · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE CORNER RADIUS: 0.0937 INCHES NOMINAL IN
•
CONE WIDTH: 0.8640 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 2.2500 INCHES NOMINAL IN
•
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
CONE CORNER RADIUS0.0937 INCHES NOMINAL IN
CONE WIDTH0.8640 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 10
536645Reference document
Same NSN cross-reference
Reference document — Secondary reference
108420Reference document
Same NSN cross-reference
Reference document — Secondary reference
VT3435Reference document
Same NSN cross-reference
Reference document — Secondary reference
F58001Reference document
Same NSN cross-reference
Reference document — Secondary reference
52401Reference document
Same NSN cross-reference
Reference document — Secondary reference
E18EB9Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K-387?
K-387 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace K-387?
There are 10 known substitutes for K-387: 536645, 108420, VT3435 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for K-387?
K-387 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0228. This indicates validated use in U.S. government and defense supply chains.
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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.