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Technical Data Sheet
PartsTable / COMPONENT / R163A
R163A ✓ 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 chain: NOT INCLUDED, phase: THREE, shape: SQUARE, width: 0.380 INCHES NOMINAL IN, height: 18.000 INCHES NOMINAL IN, insert: NOT INCLUDED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0376, 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
R163A
NSN: 3110-00-100-0376
FSC: 3110
CAGE: 55921 — CURTIS-TOLEDO, INC. (USA)
SPECIFICATIONS
chainNOT INCLUDED
phaseTHREE
shapeSQUARE
width0.380 INCHES NOMINAL IN
height18.000 INCHES NOMINAL IN
insertNOT INCLUDED
length19.000 FEET FT
cushionNOT INCLUDED
capacity2500.0 POUNDS LBS
diameter0.250 INCHES NOMINAL IN
materialALUMINUM OVERALL
base_typeSWIVEL
NSN3110-00-100-0376
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R163A · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 36
NP2099PC38Interchangeable
interchangeable cross-reference
interchangeable
5LE661Interchangeable
interchangeable cross-reference
interchangeable
MS35744-37Interchangeable
interchangeable cross-reference
interchangeable
186629Interchangeable
interchangeable cross-reference
interchangeable
102075Interchangeable
interchangeable cross-reference
interchangeable
9100-0102Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R163A?
R163A is a CUP,TAPERED ROLLER BEARING.
What parts can replace R163A?
There are 36 known substitutes for R163A: NP2099PC38, 5LE661, MS35744-37 and 33 more. Substitute compatibility should be verified for your specific system.
Is R163A still available?
R163A 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