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Technical Data Sheet
PartsTable / COMPONENT / 52387
52387 ✓ Verified by PartsTable
Bestway · 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 TUBING, design_form: PREBENT, thread_class: 2B SINGLE END, wall_thickness: 0.028 INCHES NOMINAL IN, thread_direction: RIGHT-HAND SINGLE END, seat_angle_in_deg: 45.0 SINGLE END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3619, 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
52387
NSN: 3110-00-100-3619
FSC: 3110
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL TUBING
design_formPREBENT
thread_class2B SINGLE END
wall_thickness0.028 INCHES NOMINAL IN
thread_directionRIGHT-HAND SINGLE END
seat_angle_in_deg45.0 SINGLE END
mating_end_quantity2 SINGLE END
nominal_thread_size0.625 INCHES SINGLE END IN
end_connection_styleSWIVEL NUT WITH COMPRESSION SLEEVE SECOND END
fsc_application_dataFUEL SYSTEM,DIESEL ENGIE
tube_outside_diameter0.375 INCHES NOMINAL IN
thread_series_designatorUNF SINGLE END
NSN3110-00-100-3619
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 52387 · Bestway ⚠ 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
BORE DIAMETER: 3.8750 INCHES NOMINAL IN
•
CONE WIDTH: 1.4219 INCHES NOMINAL IN
•
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
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
BORE DIAMETER3.8750 INCHES NOMINAL IN
CONE WIDTH1.4219 INCHES NOMINAL IN
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
438-432Interchangeable
interchangeable cross-reference
interchangeable
FF-B-187AInterchangeable
interchangeable cross-reference
interchangeable
43-8Interchangeable
interchangeable cross-reference
interchangeable
5315-7-2B2-00Interchangeable
interchangeable cross-reference
interchangeable
5315-7-2B1-50Interchangeable
interchangeable cross-reference
interchangeable
370Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 52387?
52387 is a CONE AND ROLLERS,TAPERED ROLLER manufactured by Bestway.
What parts can replace 52387?
There are 21 known substitutes for 52387: 438-432, FF-B-187A, 43-8 and 18 more. Substitute compatibility should be verified for your specific system.
Is 52387 still available?
52387 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