PartsTable
Technical Data Sheet
520AC ✓ 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

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: IRON CAST BODY, overall_width: 5.500 INCHES NOMINAL IN, overall_height: 10.125 INCHES NOMINAL IN, special_features: PIPE DIAMETER 1.250 IN IN, operating_pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, overall_outside_diameter: 7.000 INCHES NOMINAL 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 3110-00-156-7531, 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
520AC
NSN: 3110-00-156-7531
FSC: 3110
CAGE: 43991 — FAG BEARINGS CORPORATION (USA)
SPECIFICATIONS
materialIRON CAST BODY
overall_width5.500 INCHES NOMINAL IN
overall_height10.125 INCHES NOMINAL IN
special_featuresPIPE DIAMETER 1.250 IN IN
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
overall_outside_diameter7.000 INCHES NOMINAL IN
NSN3110-00-156-7531
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 520AC · 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
CONTACT ANGLE: 25.0 DEGREES MINIMUM
LOAD DIRECTION: ANGULAR
STYLE DESIGNATOR: COUNTERBORED OUTER RING, NON-SEPARABLE
MATERIAL: STEEL OVERALL
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
CONTACT ANGLE25.0 DEGREES MINIMUM
LOAD DIRECTIONANGULAR
STYLE DESIGNATORCOUNTERBORED OUTER RING, NON-SEPARABLE
MATERIALSTEEL OVERALL
LOAD DIRECTIONANGULAR
CONTACT ANGLE25.0 DEGREES MINIMUM
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
OVERALL WIDTH19.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
7404Interchangeable
interchangeable cross-reference
interchangeable
D2-9864-306Interchangeable
interchangeable cross-reference
interchangeable
586-326Interchangeable
interchangeable cross-reference
interchangeable
35474040-1001Interchangeable
interchangeable cross-reference
interchangeable
0301-8490Interchangeable
interchangeable cross-reference
interchangeable
QB500-47798Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520AC?
520AC is a BEARING,BALL,ANNULAR.
What parts can replace 520AC?
There are 23 known substitutes for 520AC: 7404, D2-9864-306, 586-326 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 520AC?
520AC is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-7531. This indicates validated use in U.S. government and defense supply chains.
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