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55750 — COVER,AIRCRAFT GROUND SERVICING

✓ Government record, cited
Hama · BALL BEARING
PRODUCT OVERVIEW

55750: COVER,AIRCRAFT GROUND SERVICING.

Capaciteit: Max. 8 kaarten Kleur: Zwart Type: Tas. Key specifications include specific_use: FUSELAGE, furnished_items: WARNING STREAMER, mounting_method: PRESS FIT, aircraft_identification_number_for_which_designed: A-10A A.

This part is cataloged in the U.S. Government catalog under NSN 3120-00-031-1225, 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
55750
NSN: 3120-00-031-1225
NIINs: 000311225, 011343113
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
specific_useFUSELAGE
furnished_itemsWARNING STREAMER
mounting_methodPRESS FIT
aircraft_identification_number_for_which_designedA-10A A
NSN3120-00-031-1225
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 55750 · Hama ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INNER MEMBER WIDTH: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
•
HARDNESS RATING: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
•
OUTER MEMBER WIDTH: 0.5620 INCHES MINIMUM AND 0.5720 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: WITHOUT INSERT OR LINER WITH STAKING GROOVE
•
SURFACE TREATMENT: CHROMIUM INNER MEMBER
•
STATIC RADIAL LOAD RATING: 35000 POUNDS LBS
•
BORE DIAMETER: 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 440C INNER MEMBER
TECHNICAL CHARACTERISTICS
INNER MEMBER WIDTH0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
HARDNESS RATING57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
OUTER MEMBER WIDTH0.5620 INCHES MINIMUM AND 0.5720 INCHES MAXIMUM IN
STYLE DESIGNATORWITHOUT INSERT OR LINER WITH STAKING GROOVE
SURFACE TREATMENTCHROMIUM INNER MEMBER
STATIC RADIAL LOAD RATING35000 POUNDS LBS
BORE DIAMETER0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
MATERIALSTEEL COMP 440C INNER MEMBER
MATERIALSTEEL COMP 630 OUTER RACE MEMBER
OUTER MEMBER OUTSIDE DIAMETER1.1870 INCHES MINIMUM AND 1.1875 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
AW10V65Reference document
Same NSN cross-reference
Reference document — Secondary reference
GB520CM624HSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55750?
55750 is a COVER,AIRCRAFT GROUND SERVICING manufactured by Hama.
What parts can replace 55750?
There are 2 known substitutes for 55750: AW10V65, GB520CM624H. Substitute compatibility should be verified for your specific system.
What is the NSN for 55750?
55750 is cataloged in the U.S. Government catalog under NSN 3120-00-031-1225. 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.