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Technical Data Sheet
PartsTable / COMPONENT / 520439
520439 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include color: BLACK INSCRIPTION, material: PLASTIC ACRYLIC LENS, inscription: L BLEED BACK, overall_width: 0.485 INCHES NOMINAL IN, overall_length: 0.550 INCHES NOMINAL IN, mounting_method: PRESS FIT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8547, 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
520439
NSN: 3110-00-144-8547
FSC: 3110
CAGE: R1120 — SATAIR A/S (DNK)
SPECIFICATIONS
colorBLACK INSCRIPTION
materialPLASTIC ACRYLIC LENS
inscriptionL BLEED BACK
overall_width0.485 INCHES NOMINAL IN
overall_length0.550 INCHES NOMINAL IN
mounting_methodPRESS FIT
style_designatorFLAT
surface_conditionSMOOTH BACK
mounting_device_quantity1
light_transmission_designTRANSLUCENT LENS
NSN3110-00-144-8547
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 520439 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
MATERIAL: STEEL INNER RING
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
BORE DIAMETER: 55.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL FIT-UP DESIGNATIONSTANDARD
MATERIALSTEEL INNER RING
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OUTER RING
MATERIALSTEEL BALL
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER55.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
LOAD DIRECTIONRADIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
T311Interchangeable
interchangeable cross-reference
interchangeable
T211Interchangeable
interchangeable cross-reference
interchangeable
21046Interchangeable
interchangeable cross-reference
interchangeable
SM-D-587457Interchangeable
interchangeable cross-reference
interchangeable
6211Interchangeable
interchangeable cross-reference
interchangeable
25923Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520439?
520439 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace 520439?
There are 25 known substitutes for 520439: T311, T211, 21046 and 22 more. Substitute compatibility should be verified for your specific system.
Is 520439 still available?
520439 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