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Technical Data Sheet
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178018 — BEARING,PLAIN,SPHERICAL

✓ Government record, cited
Hama · BALL BEARING
PRODUCT OVERVIEW

178018: BEARING,PLAIN,SPHERICAL.

- Slip-in compartment for cards or the like - Soft inside lining that protects the sensitive surface of the case - Protects the back of the smartphone from dirt and scratches - Slim design: especially light and slim cover This part is cataloged in the U.S. Government catalog under NSN 3120-01-157-2645, 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
178018
NSN: 3120-01-157-2645
NIINs: 011572645, 014240013
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 09455 — RBC TRANSPORT DYNAMICS CORP DIV RBC TRANSPORT DYNAMICS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
corner_shapeCHAMFERED ALL CORNERS
overall_length0.9420 INCHES MINIMUM AND 0.9470 INCHES MAXIMUM IN
style_designatorSOLID
body_inside_diameter0.9985 INCHES MINIMUM AND 1.0005 INCHES MAXIMUM IN
NSN3120-01-157-2645
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 178018 · 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
•
CORNER SHAPE: CHAMFERED ALL CORNERS
•
STYLE DESIGNATOR: SOLID
•
BODY INSIDE DIAMETER: 0.9985 INCHES MINIMUM AND 1.0005 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPECHAMFERED ALL CORNERS
STYLE DESIGNATORSOLID
OVERALL LENGTH0.9420 INCHES MINIMUM AND 0.9470 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.9985 INCHES MINIMUM AND 1.0005 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
4070T4P01 99207Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ASSB16-35Reference document
Same NSN cross-reference
Reference document — Secondary reference
4070T47Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
10108150Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 178018?
178018 is a BEARING,PLAIN,SPHERICAL manufactured by Hama.
What parts can replace 178018?
There are 4 known substitutes for 178018: 4070T4P01 99207, ASSB16-35, 4070T47 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 178018?
178018 is cataloged in the U.S. Government catalog under NSN 3120-01-157-2645. 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.