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Technical Data Sheet
PartsTable / COMPONENT / 55187
55187 ✓ 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 material: STEEL CORROSION RESISTING OVERALL, head_shape: RECTANGULAR, face_finish: PROVIDED, handle_type: SOLID, head_length: 3.125 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: TWO POUND MALLET. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3627, 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
55187
NSN: 3110-00-100-3627
FSC: 3110
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_shapeRECTANGULAR
face_finishPROVIDED
handle_typeSOLID
head_length3.125 INCHES NOMINAL IN
special_featuresHARDENED AND PASSIVATED; TWO LB; SUITABLE FOR GENERAL ORTHOPEDIC SURGICAL PROCEDURES; AUTHORIZED SUBSTITUTE FOR 6515-00-346-8400
part_name_assigned_by_controlling_agencyTWO POUND MALLET
NSN3110-00-100-3627
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 55187 · 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
•
BORE DIAMETER: 1.8750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STEEP ANGLE
•
CONE WIDTH: 1.0594 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1406 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 (FLIS)
BORE DIAMETER1.8750 INCHES NOMINAL IN
STYLE DESIGNATORSTEEP ANGLE
CONE WIDTH1.0594 INCHES NOMINAL IN
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
11168Interchangeable
interchangeable cross-reference
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S637471Interchangeable
interchangeable cross-reference
interchangeable
140316Interchangeable
interchangeable cross-reference
interchangeable
DS2709Interchangeable
interchangeable cross-reference
interchangeable
SL5276PC13Interchangeable
interchangeable cross-reference
interchangeable
778PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55187?
55187 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 55187?
There are 26 known substitutes for 55187: 11168, S637471, 140316 and 23 more. Substitute compatibility should be verified for your specific system.
Is 55187 still available?
55187 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