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Technical Data Sheet
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51078 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
Hama · TAPERED BEARING
PRODUCT OVERVIEW

51078: CUP,TAPERED ROLLER BEARING.

- Paper sleeve with transparent window (easy classification) - Storage and transport of one 8cm disc/mini-CD-ROM/mini-DVD-ROM each - Content: 25 pcs, pack welded in polybag - Colour: white - Dimensions: 8.6 x 8.6 (each sleeve) This part is cataloged in the U.S. Government catalog under NSN 3110-00-100-0522, 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
51078
NSN: 3110-00-100-0522
NIINs: 001000522, 002380881, 016984358
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleCHAMFERED
pin_overall_length1.125 INCHES NOMINAL IN
pin_overall_diameter0.4960 INCHES MINIMUM AND 0.4970 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.031 INCHES NOMINAL IN
second_end_relationship_with_first_endIDENTICAL
NSN3110-00-100-0522
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 51078 · Hama ⚠ 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
SUBSTITUTES & CROSS-REFERENCES 7
15250Reference document
Same NSN cross-reference
Reference document — Secondary reference
510278Reference document
Same NSN cross-reference
Reference document — Secondary reference
15021WReference document
Same NSN cross-reference
Reference document — Secondary reference
4723397Reference document
Same NSN cross-reference
Reference document — Secondary reference
ME88-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
157453Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 51078?
51078 is a CUP,TAPERED ROLLER BEARING manufactured by Hama.
What parts can replace 51078?
There are 7 known substitutes for 51078: 15250, 510278, 15021W and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51078?
51078 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0522. 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.