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203-1993340SHIPC103 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

203-1993340SHIPC103: BEARING,ROLLER,TAPERED.

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 3.1581 INCHES NOMINAL IN, bore_diameter: 4.0000 INCHES NOMINAL IN, overall_width: 4.5625 INCHES NOMINAL IN, standout_width: 0.7022 INCHES NOMINAL IN, special_features: FURNISHED WITH X1S98400 CONE SPACER,0.0080 IN. BENCH LATERAL IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-967-7974, 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
203-1993340SHIPC103
NSN: 3110-00-967-7974
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width3.1581 INCHES NOMINAL IN
bore_diameter4.0000 INCHES NOMINAL IN
overall_width4.5625 INCHES NOMINAL IN
standout_width0.7022 INCHES NOMINAL IN
special_featuresFURNISHED WITH X1S98400 CONE SPACER,0.0080 IN. BENCH LATERAL IN
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
cone_corner_radius0.1400 INCHES NOMINAL IN
backface_corner_radius0.0930 INCHES NOMINAL IN
overall_outside_diameter7.3750 INCHES NOMINAL IN
nondefinitive_spec/std_data753 TYPE
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-967-7974
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 203-1993340SHIPC103 · 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
•
CUP WIDTH: 3.1581 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
•
OVERALL OUTSIDE DIAMETER: 7.3750 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0930 INCHES NOMINAL IN
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY SPECIAL FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 753 TYPE
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
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
CUP WIDTH3.1581 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
OVERALL WIDTH4.5625 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER7.3750 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0930 INCHES NOMINAL IN
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY SPECIAL FEATURES
NONDEFINITIVE SPEC/STD DATA753 TYPE
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
STANDOUT WIDTH0.7022 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED WITH X1S98400 CONE SPACER,0.0080 IN. BENCH LATERAL IN
SUBSTITUTES & CROSS-REFERENCES 2
A4740Reference document
Same NSN cross-reference
Reference document — Secondary reference
FFB187Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 203-1993340SHIPC103?
203-1993340SHIPC103 is a BEARING,ROLLER,TAPERED.
What parts can replace 203-1993340SHIPC103?
There are 2 known substitutes for 203-1993340SHIPC103: A4740, FFB187. Substitute compatibility should be verified for your specific system.
What is the NSN for 203-1993340SHIPC103?
203-1993340SHIPC103 is cataloged in the U.S. Government catalog under NSN 3110-00-967-7974. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.