PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 88503
88503 ✓ Verified by PartsTable
InLine · 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

ACTUATOR,ELECTROMECHANICAL,ROTAR. Key specifications include material: STEEL INNER RING, bore_shape: STRAIGHT, bore_diameter: 17.00 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND, inner_ring_width: 0.6540 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 3110-00-005-5995, 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
88503
NSN: 3110-00-005-5995
FSC: 3110
CAGE: 23043 — N T N BEARING CORP OF AMERICA (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter17.00 MILLIMETERS NOMINAL MM
seal_quantity2
load_directionRADIAL
surface_finishGROUND
inner_ring_width0.6540 INCHES NOMINAL IN
outer_ring_width0.4720 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeCONTACT
lubrication_materialGREASE
end_item_identificationCONTROLLER AS
NSN3110-00-005-5995
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 88503 · InLine ⚠ 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
•
OUTER RING WIDTH: 0.4724 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
INNER RING WIDTH: 0.6536 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL: STEEL INNER RING
TECHNICAL CHARACTERISTICS (FLIS)
OUTER RING WIDTH0.4724 INCHES NOMINAL IN
SURFACE FINISHGROUND
INNER RING WIDTH0.6536 INCHES NOMINAL IN
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL INNER RING
MATERIALRUBBER SEAL
MATERIALSTEEL BALL
MATERIALSTEEL RETAINER
MATERIALSTEEL OUTER RING
BORE SHAPESTRAIGHT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
88503Interchangeable
interchangeable cross-reference
interchangeable
X1499Interchangeable
interchangeable cross-reference
interchangeable
203LL2Interchangeable
interchangeable cross-reference
interchangeable
88503XR1VInterchangeable
interchangeable cross-reference
interchangeable
46911Interchangeable
interchangeable cross-reference
interchangeable
A46911Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 88503?
88503 is a ACTUATOR,ELECTROMECHANICAL,ROTAR manufactured by InLine.
What parts can replace 88503?
There are 10 known substitutes for 88503: 88503, X1499, 203LL2 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 88503?
88503 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-005-5995. 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