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Technical Data Sheet
PartsTable / COMPONENT / SLF523-8
SLF523-8 ✓ 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

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, flange_width: 0.1225 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN, overall_length: 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-988-8020, 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
SLF523-8
NSN: 3120-00-988-8020
FSC: 3120
CAGE: 02254 — MASTEN BUNTING EAGLE-PICHER BEARINGS DIV EAGLE-PICHER INDUSTRIES INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
flange_width0.1225 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
overall_length0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
body_outside_diameter0.7520 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN
flange_outside_diameter0.9325 INCHES MINIMUM AND 0.9425 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-988-8020
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SLF523-8 · 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
•
FLANGE OUTSIDE DIAMETER: 0.9325 INCHES MINIMUM AND 0.9425 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
FLANGE WIDTH: 0.1225 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.7520 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
BODY INSIDE DIAMETER: 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE ALL CORNERS
FLANGE OUTSIDE DIAMETER0.9325 INCHES MINIMUM AND 0.9425 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
FLANGE WIDTH0.1225 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.7520 INCHES MINIMUM AND 0.7530 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
BODY INSIDE DIAMETER0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALOIL LUBRICATING LUBRICATION
OVERALL LENGTH0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
F7075Interchangeable
interchangeable cross-reference
interchangeable
CS17T50-1Interchangeable
interchangeable cross-reference
interchangeable
SE509-6TInterchangeable
interchangeable cross-reference
interchangeable
540054-116Interchangeable
Same NIIN cross-reference
interchangeable
FF707-5Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SLF523-8?
SLF523-8 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace SLF523-8?
There are 5 known substitutes for SLF523-8: F7075, CS17T50-1, SE509-6T and 2 more. Substitute compatibility should be verified for your specific system.
Is SLF523-8 still available?
SLF523-8 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026