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Technical Data Sheet
PartsTable / COMPONENT / M558
M558 ✓ 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 BRUSH,ELECTRICAL CONTACT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 80.00 MILLIMETERS NOMINAL MM, overall_width: 26.0 MILLIMETERS NOMINAL MM, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, load_direction: RADIAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-555-5741, 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
M558
NSN: 3110-00-555-5741
FSC: 3110
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter80.00 MILLIMETERS NOMINAL MM
overall_width26.0 MILLIMETERS NOMINAL MM
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
load_directionRADIAL
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
winding_quantity1 SINGLE COMPONENT
end_item_identificationPACER DAWN
overall_outside_diameter140.00 MILLIMETERS NOMINAL MM
winding_operating_current1.5 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE WINDING
NSN3110-00-555-5741
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M558 · 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
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
MATERIAL: STEEL OVERALL
•
BORE SHAPE: STRAIGHT
•
SURFACE FINISH: GROUND
•
BORE DIAMETER: 80.00 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OVERALL
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
BORE DIAMETER80.00 MILLIMETERS NOMINAL MM
OVERALL WIDTH26.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER140.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
112Interchangeable
interchangeable cross-reference
interchangeable
216AInterchangeable
interchangeable cross-reference
interchangeable
FM4Interchangeable
interchangeable cross-reference
interchangeable
5601-0001Interchangeable
interchangeable cross-reference
interchangeable
32-805805-4Interchangeable
interchangeable cross-reference
interchangeable
P1-1016Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M558?
M558 is a BRUSH,ELECTRICAL CONTACT.
What parts can replace M558?
There are 28 known substitutes for M558: 112, 216A, FM4 and 25 more. Substitute compatibility should be verified for your specific system.
Is M558 still available?
M558 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