PartsTable
Technical Data Sheet
X4789451 ✓ Verified by PartsTable
· BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The CLUTCH ASSEMBLY,FRICTION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416SE OVERALL, corner_shape: ROUND ALL CORNERS, overall_length: 0.8890 INCHES MINIMUM AND 0.8940 INCHES MAXIMUM IN, hardness_rating: 55.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, precious_material: SILVER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-478-9451, 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
X4789451
NSN: 3120-00-478-9451
FSC: 3120
CAGE: 18039 — MARC METAL FABRICATORS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 416SE OVERALL
corner_shapeROUND ALL CORNERS
overall_length0.8890 INCHES MINIMUM AND 0.8940 INCHES MAXIMUM IN
hardness_rating55.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
precious_materialSILVER
surface_treatmentSILVER OVERALL
body_inside_diameter1.2885 INCHES MINIMUM AND 1.2895 INCHES MAXIMUM IN
body_outside_diameter1.8975 INCHES MINIMUM AND 1.8980 INCHES MAXIMUM IN
material_document_and_classificationAMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-478-9451
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: X4789451 · 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
BODY OUTSIDE DIAMETER: 1.8975 INCHES MINIMUM AND 1.8980 INCHES MAXIMUM IN
CORNER SHAPE: ROUND ALL CORNERS
BODY INSIDE DIAMETER: 1.2885 INCHES MINIMUM AND 1.2895 INCHES MAXIMUM IN
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL: STEEL COMP 416SE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PRECIOUS MATERIAL: SILVER
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER1.8975 INCHES MINIMUM AND 1.8980 INCHES MAXIMUM IN
CORNER SHAPEROUND ALL CORNERS
BODY INSIDE DIAMETER1.2885 INCHES MINIMUM AND 1.2895 INCHES MAXIMUM IN
OVERALL LENGTH0.8890 INCHES MINIMUM AND 0.8940 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIALSTEEL COMP 416SE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PRECIOUS MATERIALSILVER
HARDNESS RATING55.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENTSILVER OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
128258Interchangeable
interchangeable cross-reference
interchangeable
218S337Interchangeable
interchangeable cross-reference
interchangeable
218K337Interchangeable
interchangeable cross-reference
interchangeable
1648237C91Interchangeable
interchangeable cross-reference
interchangeable
ASW128258Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X4789451?
X4789451 is a CLUTCH ASSEMBLY,FRICTION.
What parts can replace X4789451?
There are 5 known substitutes for X4789451: 128258, 218S337, 218K337 and 2 more. Substitute compatibility should be verified for your specific system.
Is X4789451 still available?
X4789451 is currently cancelled.
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