PartsTable
Technical Data Sheet
KLS4-3 ✓ 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 BEARING,PLAIN,SELF-ALIGNING is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 INNER MEMBER, bore_diameter: 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN, hardness_rating: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER, style_designator: WITHOUT INSERT OR LINER, surface_treatment: CHROMIUM INNER MEMBER, inner_member_width: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-613-1487, 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
KLS4-3
NSN: 3120-00-613-1487
FSC: 3120
CAGE: 97613 — SARGENT AEROSPACE & DEFENSE, LLC DBA KAHR BEARINGS (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 INNER MEMBER
bore_diameter0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
hardness_rating57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
style_designatorWITHOUT INSERT OR LINER
surface_treatmentCHROMIUM INNER MEMBER
inner_member_width0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
outer_member_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
lubrication_featurePERFORATION OUTER RACE MEMBER
static_radial_load_rating5000 POUNDS LBS
outer_member_outside_diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
material_document_and_classificationAMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
surface_treatment_document_and_classificationAMS 2406 ASSN STD SINGLE TREATMENT RESPONSE INNER MEMBER
NSN3120-00-613-1487
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: KLS4-3 · 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
MATERIAL: COPPER ALLOY OUTER RACE MEMBER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE INNER MEMBER
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
SURFACE TREATMENT: CHROMIUM INNER MEMBER
HARDNESS RATING: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
STYLE DESIGNATOR: WITHOUT INSERT OR LINER
INNER MEMBER WIDTH: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OUTER RACE MEMBER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2406 ASSN STD SINGLE TREATMENT RESPONSE INNER MEMBER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6440 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER
SURFACE TREATMENTCHROMIUM INNER MEMBER
HARDNESS RATING57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
STYLE DESIGNATORWITHOUT INSERT OR LINER
MATERIALSTEEL COMP E52100 INNER MEMBER
INNER MEMBER WIDTH0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
BORE DIAMETER0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
OUTER MEMBER OUTSIDE DIAMETER0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
706B306P7Interchangeable
interchangeable cross-reference
interchangeable
B4BInterchangeable
interchangeable cross-reference
interchangeable
706B306P1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is KLS4-3?
KLS4-3 is a BEARING,PLAIN,SELF-ALIGNING.
What parts can replace KLS4-3?
There are 3 known substitutes for KLS4-3: 706B306P7, B4B, 706B306P1. Substitute compatibility should be verified for your specific system.
What is the NSN for KLS4-3?
KLS4-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-613-1487. This indicates validated use in U.S. government and defense supply chains.
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