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Technical Data Sheet
PartsTable / COMPONENT / X394
X394 ✓ 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 CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include height: 1.141 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, thread_class: 2A A, overall_width: 0.5938 INCHES NOMINAL IN, outside_diameter: 2.3125 INCHES NOMINAL IN, style_designator: STRAIGHT, ROTATING SLEEVE, SELF CLOSING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0352, 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
X394
NSN: 3110-00-100-0352
FSC: 3110
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
height1.141 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
thread_class2A A
overall_width0.5938 INCHES NOMINAL IN
outside_diameter2.3125 INCHES NOMINAL IN
style_designatorSTRAIGHT, ROTATING SLEEVE, SELF CLOSING
nominal_thread_size0.500 INCHES IN
backface_corner_radius0.0469 INCHES NOMINAL IN
assembly_clearance_radius0.312 INCHES NOMINAL IN
screw_thread_series_designatorUNF
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0352
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: X394 · 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
•
BACKFACE CORNER RADIUS: 0.0469 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 2.3125 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 (FLIS)
BACKFACE CORNER RADIUS0.0469 INCHES NOMINAL IN
OVERALL WIDTH0.5938 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORNORMAL ANGLE
OUTSIDE DIAMETER2.3125 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
33-020268-01Interchangeable
interchangeable cross-reference
interchangeable
1932Interchangeable
IBM 4GB (2 x 2GB) PC2-4200 DDR2 Memory Kit
interchangeable
5035AInterchangeable
interchangeable cross-reference
interchangeable
512R268G01Interchangeable
interchangeable cross-reference
interchangeable
7561Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-636Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X394?
X394 is a CUP,TAPERED ROLLER BEARING.
What parts can replace X394?
There are 27 known substitutes for X394: 33-020268-01, 1932, 5035A and 24 more. Substitute compatibility should be verified for your specific system.
Is X394 still available?
X394 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