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121777 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

121777: 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 end_item_identification: PUMP,FUEL TR, measuring_method_and_length: 32.0 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0545, 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
121777
NSN: 3110-00-100-0545
NIINs: 001000545, 016147683
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 81495 — KOEHRING CRANES, INC DBA TEREX CRANES DIV WAVERLY OPERATIONS (USA)
SPECIFICATIONS
end_item_identificationPUMP,FUEL TR
measuring_method_and_length32.0 INCHES NOMINAL OVERALL IN
NSN3110-00-100-0545
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121777 · 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: 3.2700 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
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 WIDTH0.7500 INCHES NOMINAL IN
OUTSIDE DIAMETER3.2700 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
ST977Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA59649-270BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AA59649Reference document
Same NSN cross-reference
Reference document — Identification reference
BT25521Reference document
Same NSN cross-reference
Reference document — Secondary reference
432777Reference document
Same NSN cross-reference
Reference document — Secondary reference
706851Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121777?
121777 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 121777?
There are 9 known substitutes for 121777: ST977, AA59649-270B, AA59649 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121777?
121777 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0545. This indicates validated use in U.S. government and defense supply chains.
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