PartsTable
Technical Data Sheet
PartsTable / COMPONENT / KJN56-4
KJN56-4 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include corner_shape: CHAMFERED INSIDE LEFT CORNER, overall_length: 2.2180 INCHES MINIMUM AND 2.2200 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: ANODIZE OUTSIDE DIAMETER SURFACE OF BODY, body_inside_diameter: 3.5030 INCHES MINIMUM AND 3.5050 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 3120-00-928-6294, 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
KJN56-4
NSN: 3120-00-928-6294
FSC: 3120
CAGE: 97613 — SARGENT AEROSPACE & DEFENSE, LLC DBA KAHR BEARINGS (USA)
SPECIFICATIONS
corner_shapeCHAMFERED INSIDE LEFT CORNER
overall_length2.2180 INCHES MINIMUM AND 2.2200 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentANODIZE OUTSIDE DIAMETER SURFACE OF BODY
body_inside_diameter3.5030 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
body_outside_diameter4.1240 INCHES MINIMUM AND 4.1250 INCHES MAXIMUM IN
NSN3120-00-928-6294
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: KJN56-4 · 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
•
SURFACE TREATMENT: ANODIZE RIGHT END SURFACE OF BODY
•
CORNER SHAPE: SQUARE OUTSIDE LEFT CORNER
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 3.5030 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 4.1240 INCHES MINIMUM AND 4.1250 INCHES MAXIMUM IN
•
SURFACE FINISH: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTANODIZE RIGHT END SURFACE OF BODY
OVERALL LENGTH2.2180 INCHES MINIMUM AND 2.2200 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
BODY INSIDE DIAMETER3.5030 INCHES MINIMUM AND 3.5050 INCHES MAXIMUM IN
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
BODY OUTSIDE DIAMETER4.1240 INCHES MINIMUM AND 4.1250 INCHES MAXIMUM IN
SURFACE FINISH32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENTANODIZE LEFT END SURFACE OF BODY
SURFACE TREATMENTANODIZE OUTSIDE DIAMETER SURFACE OF BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
5340002489406Interchangeable
interchangeable cross-reference
interchangeable
51855Interchangeable
interchangeable cross-reference
interchangeable
SC-B-70501Interchangeable
interchangeable cross-reference
interchangeable
160-2085-02-05-00Interchangeable
interchangeable cross-reference
interchangeable
5158-13Interchangeable
interchangeable cross-reference
interchangeable
578649-11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy KJN56-4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is KJN56-4?
KJN56-4 is a BEARING,SLEEVE.
What parts can replace KJN56-4?
There are 14 known substitutes for KJN56-4: 5340002489406, 51855, SC-B-70501 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for KJN56-4?
KJN56-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-928-6294. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — KJN56-4

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026