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753A — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

753A: CUP,TAPERED ROLLER BEARING.

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 magnification: 7.0X NOMINAL, special_features: REL. LIGHT EFFICIENCY 84.2;EXIT PUPIL 7.14MM; MM, field_view_coverage: 393 FEET FT, optical_device_type: PRISM.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-903-2186, 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
753A
NSN: 3110-00-903-2186
NIINs: 009032186, 013839835, 016092521
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
magnification7.0X NOMINAL
special_featuresREL. LIGHT EFFICIENCY 84.2;EXIT PUPIL 7.14MM; MM
field_view_coverage393 FEET FT
optical_device_typePRISM
NSN3110-00-903-2186
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 753A · 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 6.6250 INCHES MINIMUM AND 6.6260 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0310 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
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH1.9275 INCHES MINIMUM AND 1.9395 INCHES MAXIMUM IN
OUTSIDE DIAMETER6.6250 INCHES MINIMUM AND 6.6260 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0310 INCHES NOMINAL IN
SPECIAL FEATURESTHD DATA,6.6250 IN.-12 NS-SPL/HARD THD/0.5620 IN. LG FRONT FACE END IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
10945855Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
64AX240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 753A?
753A is a CUP,TAPERED ROLLER BEARING.
What parts can replace 753A?
There are 2 known substitutes for 753A: 10945855, 64AX240. Substitute compatibility should be verified for your specific system.
What is the NSN for 753A?
753A is cataloged in the U.S. Government catalog under NSN 3110-00-903-2186. 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.