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A-33701 — BEARING,ROLLER,TAPERED

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

A-33701: 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 cup_width: 0.9375 INCHES NOMINAL IN, cone_width: 1.1875 INCHES NOMINAL IN, bore_diameter: 2.6250 INCHES MINIMUM AND 2.6255 INCHES MAXIMUM IN, overall_width: 2.6380 INCHES MINIMUM AND 2.6660 INCHES MAXIMUM IN, standout_width: 0.2500 INCHES NOMINAL IN, style_designator: STRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-338-6931, 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
A-33701
NSN: 3110-01-338-6931
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60038 — THE TIMKEN CORPORATION (USA)
SPECIFICATIONS
cup_width0.9375 INCHES NOMINAL IN
cone_width1.1875 INCHES NOMINAL IN
bore_diameter2.6250 INCHES MINIMUM AND 2.6255 INCHES MAXIMUM IN
overall_width2.6380 INCHES MINIMUM AND 2.6660 INCHES MAXIMUM IN
standout_width0.2500 INCHES NOMINAL IN
special_featuresTWO CUPS WITH TWO SPACERS K326057R AND TWO CONES WITH ONE K326056R; SPACERS PROVIDE 0.001-0.007 IN. END PLAY; BENCH END PLAY 0.022 PORM 0.001 IN. IN
style_designatorSTRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
cone_corner_radius0.1400 INCHES MAXIMUM IN
backface_corner_radius0.0300 INCHES MAXIMUM IN
overall_outside_diameter4.4375 INCHES MINIMUM AND 4.4385 INCHES MAXIMUM IN
NSN3110-01-338-6931
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A-33701 · 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: 0.9375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
•
OVERALL OUTSIDE DIAMETER: 4.4375 INCHES MINIMUM AND 4.4385 INCHES MAXIMUM IN
•
BACKFACE CORNER RADIUS: 0.0300 INCHES MAXIMUM IN
•
CONE CORNER RADIUS: 0.1400 INCHES MAXIMUM IN
•
STANDOUT WIDTH: 0.2500 INCHES NOMINAL IN
•
CONE WIDTH: 1.1875 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 WIDTH0.9375 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, SINGLE CUPS, SINGLE CONES CUP AND CONE SPACERS
OVERALL WIDTH2.6380 INCHES MINIMUM AND 2.6660 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER4.4375 INCHES MINIMUM AND 4.4385 INCHES MAXIMUM IN
BACKFACE CORNER RADIUS0.0300 INCHES MAXIMUM IN
CONE CORNER RADIUS0.1400 INCHES MAXIMUM IN
STANDOUT WIDTH0.2500 INCHES NOMINAL IN
CONE WIDTH1.1875 INCHES NOMINAL IN
SPECIAL FEATURESTWO CUPS WITH TWO SPACERS K326057R AND TWO CONES WITH ONE K326056R; SPACERS PROVIDE 0.001-0.007 IN. END PLAY; BENCH END PLAY 0.022 PORM 0.001 IN. IN
BORE DIAMETER2.6250 INCHES MINIMUM AND 2.6255 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 4
39590 ASSEMBLY 90059Reference document
Same NSN cross-reference
Reference document — Secondary reference
39590/39521DBP25#02Reference document
Same NSN cross-reference
Reference document — Secondary reference
7HS19Reference document
Same NSN cross-reference
Reference document — Secondary reference
1701380Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-33701?
A-33701 is a BEARING,ROLLER,TAPERED.
What parts can replace A-33701?
There are 4 known substitutes for A-33701: 39590 ASSEMBLY 90059, 39590/39521DBP25#02, 7HS19 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-33701?
A-33701 is cataloged in the U.S. Government catalog under NSN 3110-01-338-6931. 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.