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Technical Data Sheet
PartsTable / COMPONENT / ST781
ST781 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include general_characteristics_item_description: STEEL; O/A LG 5.880 IN.; WIDTH 2.500 IN.; USED WITH CYLINDER LINER PULLER IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-142-4364, 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
ST781
NSN: 3110-00-142-4364
FSC: 3110
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL; O/A LG 5.880 IN.; WIDTH 2.500 IN.; USED WITH CYLINDER LINER PULLER IN
NSN3110-00-142-4364
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ST781 · 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
•
MATERIAL: STEEL OVERALL
•
BORE DIAMETER: 1.6880 INCHES NOMINAL IN
•
CONE WIDTH: 0.8820 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
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)
MATERIALSTEEL OVERALL
BORE DIAMETER1.6880 INCHES NOMINAL IN
CONE WIDTH0.8820 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
148346Interchangeable
interchangeable cross-reference
interchangeable
CD19F222JInterchangeable
interchangeable cross-reference
interchangeable
277Interchangeable
interchangeable cross-reference
interchangeable
5260-2Interchangeable
interchangeable cross-reference
interchangeable
128SCP807-11Interchangeable
interchangeable cross-reference
interchangeable
K600-405Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST781?
ST781 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace ST781?
There are 21 known substitutes for ST781: 148346, CD19F222J, 277 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST781?
ST781 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-142-4364. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026