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Technical Data Sheet
PartsTable / COMPONENT / 124207
124207 ✓ 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 GUIDE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE OVERALL, corner_shape: SQUARE INSIDE LEFT CORNER, flange_width: 0.0600 INCHES NOMINAL IN, overall_length: 0.1400 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE, style_designator: SOLID, EXTERNAL FLANGE ONE END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-346-7246, 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
124207
NSN: 3120-00-346-7246
FSC: 3120
CAGE: 13973 — LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
corner_shapeSQUARE INSIDE LEFT CORNER
flange_width0.0600 INCHES NOMINAL IN
overall_length0.1400 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
style_designatorSOLID, EXTERNAL FLANGE ONE END
surface_treatmentPASSIVATE OVERALL
body_inside_diameter0.1285 INCHES MINIMUM AND 0.1291 INCHES MAXIMUM IN
body_outside_diameter0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
flange_outside_diameter0.3750 INCHES NOMINAL IN
NSN3120-00-346-7246
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 124207 · 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 INSIDE DIAMETER: 0.1285 INCHES MINIMUM AND 0.1291 INCHES MAXIMUM IN
•
SURFACE FINISH: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
•
CORNER SHAPE: SQUARE INSIDE LEFT CORNER
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.1285 INCHES MINIMUM AND 0.1291 INCHES MAXIMUM IN
SURFACE FINISH125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
CORNER SHAPESQUARE INSIDE LEFT CORNER
SURFACE FINISH63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENTPASSIVATE OVERALL
CORNER SHAPESQUARE INSIDE RIGHT CORNER
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
SURFACE FINISH125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
MATERIALSTEEL COMP 303SE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
11655789-2Interchangeable
interchangeable cross-reference
interchangeable
1727Interchangeable
interchangeable cross-reference
interchangeable
N4559Interchangeable
interchangeable cross-reference
interchangeable
124207Interchangeable
interchangeable cross-reference
interchangeable
380138Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 124207?
124207 is a GUIDE,BUTTERFLY.
What parts can replace 124207?
There are 5 known substitutes for 124207: 11655789-2, 1727, N4559 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 124207?
124207 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-346-7246. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026