PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 305-Z
305-Z ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, bore_shape: STRAIGHT, bore_diameter: 25.00 MILLIMETERS NOMINAL MM, overall_width: 17.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL, overall_length: 0.687 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-6198, 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
305-Z
NSN: 3110-00-155-6198
FSC: 3110
CAGE: 79347 — WILLIAMS SALES CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
bore_shapeSTRAIGHT
bore_diameter25.00 MILLIMETERS NOMINAL MM
overall_width17.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
overall_length0.687 INCHES NOMINAL IN
surface_finishGROUND
mounting_methodTHREADED STUD(S)
shield_quantity1
overall_diameter0.281 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
features_providedHERMETICALLY SEALED CASE
NSN3110-00-155-6198
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 305-Z · 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
•
OVERALL OUTSIDE DIAMETER: 62.00 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL SHIELD
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER62.00 MILLIMETERS NOMINAL MM
OVERALL WIDTH17.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL SHIELD
MATERIALSTEEL INNER RING
MATERIALSTEEL BALL
MATERIALSTEEL OUTER RING
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
STANDARD TOLERANCE DESIGNATIONABEC NO.1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
5110AInterchangeable
interchangeable cross-reference
interchangeable
CAQI5110AInterchangeable
interchangeable cross-reference
interchangeable
78554Interchangeable
interchangeable cross-reference
interchangeable
12025Interchangeable
interchangeable cross-reference
interchangeable
S16073Interchangeable
interchangeable cross-reference
interchangeable
SRB305SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 305-Z?
305-Z is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 305-Z?
There are 32 known substitutes for 305-Z: 5110A, CAQI5110A, 78554 and 29 more. Substitute compatibility should be verified for your specific system.
Is 305-Z still available?
305-Z 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