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Technical Data Sheet
PartsTable / COMPONENT / K-558
K-558 ✓ 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 DIAPHRAGM,PRESSURE SWITCH is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, cone_width: 1.4440 INCHES NOMINAL IN, bore_diameter: 2.3750 INCHES NOMINAL IN, special_features: MATERIAL,VULCAN 2.000 IN. DIA,0.062 IN.

THICK,7LY SPACED ON A 1.625 IN. B. C.

D. IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0938 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 3110-00-100-0281, 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
K-558
NSN: 3110-00-100-0281
FSC: 3110
CAGE: F0272 — SKF FRANCE (FRA)
SPECIFICATIONS
materialSTEEL OVERALL
cone_width1.4440 INCHES NOMINAL IN
bore_diameter2.3750 INCHES NOMINAL IN
special_featuresMATERIAL,VULCAN 2.000 IN. DIA,0.062 IN. THICK,7LY SPACED ON A 1.625 IN. B. C. D. IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0938 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0281
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: K-558 · 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
•
CONE WIDTH: 1.4440 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BORE DIAMETER: 2.3750 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CONE CORNER RADIUS: 0.0938 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CONE WIDTH1.4440 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
STYLE DESIGNATORNORMAL ANGLE
BORE DIAMETER2.3750 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
CONE CORNER RADIUS0.0938 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
30080Interchangeable
interchangeable cross-reference
interchangeable
116975Interchangeable
interchangeable cross-reference
interchangeable
50116975Interchangeable
interchangeable cross-reference
interchangeable
142250Interchangeable
interchangeable cross-reference
interchangeable
K-558Interchangeable
interchangeable cross-reference
interchangeable
308Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is K-558?
K-558 is a DIAPHRAGM,PRESSURE SWITCH.
What parts can replace K-558?
There are 19 known substitutes for K-558: 30080, 116975, 50116975 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for K-558?
K-558 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0281. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026