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Technical Data Sheet
PartsTable / COMPONENT / 619386R91
619386R91 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

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: 0.5937 INCHES NOMINAL IN, cone_width: 0.7812 INCHES NOMINAL IN, bore_diameter: 1.7812 INCHES NOMINAL IN, overall_width: 0.7812 INCHES NOMINAL IN, standout_width: 0.1875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-768-0543, 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
619386R91
NSN: 3110-00-768-0543
FSC: 3110
CAGE: 29930 — INTERNATIONAL HARVESTER CO AGRICULTURAL EQUIPMENT DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width0.5937 INCHES NOMINAL IN
cone_width0.7812 INCHES NOMINAL IN
bore_diameter1.7812 INCHES NOMINAL IN
overall_width0.7812 INCHES NOMINAL IN
standout_width0.1875 INCHES NOMINAL IN
special_featuresDUTY CLASS LM
style_designatorNORMAL ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0300 INCHES NOMINAL IN
overall_outside_diameter3.0625 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
NSN3110-00-768-0543
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 619386R91 · 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
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 1.7812 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE WIDTH: 0.7812 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 (FLIS)
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
SPECIAL FEATURESDUTY CLASS LM
BORE DIAMETER1.7812 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORNORMAL ANGLE
CONE WIDTH0.7812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
402190CPInterchangeable
interchangeable cross-reference
interchangeable
402190Interchangeable
interchangeable cross-reference
interchangeable
125095Interchangeable
interchangeable cross-reference
interchangeable
44755Interchangeable
interchangeable cross-reference
interchangeable
AA59649-297Interchangeable
interchangeable cross-reference
interchangeable
1199-192-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 619386R91?
619386R91 is a BEARING,ROLLER,TAPERED.
What parts can replace 619386R91?
There are 16 known substitutes for 619386R91: 402190CP, 402190, 125095 and 13 more. Substitute compatibility should be verified for your specific system.
Is 619386R91 still available?
619386R91 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026