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623A — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

623A: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: COPPER ALLOY CONDUCTOR ACCOMMODATION, cone_width: 1.6250 INCHES NOMINAL IN, bore_diameter: 2.2500 INCHES NOMINAL IN, overall_height: 0.500 INCHES0.500 INCHES IN, largest_diameter: 0.093 INCHES FIRST END IN, overall_diameter: 0.124 INCHES0.124 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-293-8131, 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
623A
NSN: 3110-00-293-8131
NIINs: 002938131, 007892248, 011039902
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY CONDUCTOR ACCOMMODATION
cone_width1.6250 INCHES NOMINAL IN
bore_diameter2.2500 INCHES NOMINAL IN
overall_height0.500 INCHES0.500 INCHES IN
largest_diameter0.093 INCHES FIRST END IN
overall_diameter0.124 INCHES0.124 INCHES IN
style_designatorNORMAL ANGLE
basic_shape_styleNONTUBULAR ROUND
surface_treatmentCADMIUM MOUNTING FACILITY SINGLE LAYER
cone_corner_radius0.2500 INCHES NOMINAL IN
major_bushing_length0.020 INCHES IN
minor_bushing_length0.187 INCHES IN
NSN3110-00-293-8131
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 623A · 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: 0.2500 INCHES NOMINAL IN
•
CONE WIDTH: 1.6250 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 RADIUS0.2500 INCHES NOMINAL IN
CONE WIDTH1.6250 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER2.2500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
5H0415Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 623A?
623A is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 623A?
There is 1 known substitute for 623A: 5H0415. Substitute compatibility should be verified for your specific system.
What is the NSN for 623A?
623A is cataloged in the U.S. Government catalog under NSN 3110-00-293-8131. 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.