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W3-18 — BEARING,WASHER,THRUST

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

W3-18: BEARING,WASHER,THRUST.

The BEARING,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 1.3594 INCHES NOMINAL IN, material: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, keyway_radius: 0.1562 INCHES NOMINAL IN, alignment_type: RIGID, overall_height: 1.1250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-776-2807, 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
W3-18
NSN: 3120-00-776-2807
NIINs: 007762807, 013195279
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 10695 — TAYLOR-DUNN CORPORATION DBA METRO CROWN INTERNATIONAL (USA)
SPECIFICATIONS
diameter1.3594 INCHES NOMINAL IN
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
keyway_radius0.1562 INCHES NOMINAL IN
alignment_typeRIGID
overall_height1.1250 INCHES NOMINAL IN
surface_finishGROUND
keyway_quantity4
outside_diameter2.3125 INCHES NOMINAL IN
style_designatorGROOVED RACE SURFACE
overall_thickness0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN
lubrication_featureGROOVE FLAT BEARING SURFACE
NSN3120-00-776-2807
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: W3-18 · OEM ⚠ 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: SQUARE ALL CORNERS
•
KEYWAY RADIUS: 0.1562 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND W/KEYWAYS
•
DIAMETER: 1.3594 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 2.3125 INCHES NOMINAL IN
•
LUBRICATION FEATURE: GROOVE FLAT UNFINISHED SURFACE
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
KEYWAY RADIUS0.1562 INCHES NOMINAL IN
OVERALL THICKNESS0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM IN
STYLE DESIGNATORROUND W/KEYWAYS
DIAMETER1.3594 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER2.3125 INCHES NOMINAL IN
LUBRICATION FEATUREGROOVE FLAT UNFINISHED SURFACE
LUBRICATION FEATUREGROOVE FLAT BEARING SURFACE
KEYWAY QUANTITY4
SUBSTITUTES & CROSS-REFERENCES 4
3-18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
878367Reference document
Same NSN cross-reference
Reference document — Secondary reference
1P77525A1Reference document
Same NSN cross-reference
Reference document — Secondary reference
144731Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is W3-18?
W3-18 is a BEARING,WASHER,THRUST.
What parts can replace W3-18?
There are 4 known substitutes for W3-18: 3-18, 878367, 1P77525A1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W3-18?
W3-18 is cataloged in the U.S. Government catalog under NSN 3120-00-776-2807. 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.