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Technical Data Sheet
PartsTable / COMPONENT / ER18
ER18 ✓ 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 CAP,FILLER OPENING is a the manufacturer industrial component. Key specifications include material: WOOL SEAL, bore_shape: STRAIGHT, bore_diameter: 1.1250 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND, inner_ring_width: 1.5000 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 3110-00-789-3510, 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
ER18
NSN: 3110-00-789-3510
FSC: 3110
CAGE: 02695 — MORSE INDUSTRIAL CORP SEALMASTER BEARING DIV SUB OF EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
materialWOOL SEAL
bore_shapeSTRAIGHT
bore_diameter1.1250 INCHES NOMINAL IN
seal_quantity2
load_directionRADIAL
surface_finishGROUND
inner_ring_width1.5000 INCHES NOMINAL IN
outer_ring_width0.8750 INCHES NOMINAL IN
special_featuresSTEEL SAE 52100 COLLAR
style_designatorSINGLE ROW BALL, NOT SELF-ALIGNING, INNER RING EXTENDS BOTH SIDES, WITH SETSCREW IN INNER RING, GREASE GROOVE AND SNAP RING ON OUTER RING
bearing_seal_typeLABYRINTH
features_providedSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
NSN3110-00-789-3510
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ER18 · 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
•
BORE DIAMETER: 1.1250 INCHES NOMINAL IN
•
LUBRICATION MATERIAL: LUBRICANT
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
•
INNER RING WIDTH: 1.5000 INCHES NOMINAL IN
•
BEARING SEAL TYPE: LABYRINTH
•
OUTER RING WIDTH: 0.8750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER1.1250 INCHES NOMINAL IN
LUBRICATION MATERIALLUBRICANT
INTERNAL FIT-UP DESIGNATIONSTANDARD
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
INNER RING WIDTH1.5000 INCHES NOMINAL IN
SPECIAL FEATURESSTEEL SAE 52100 COLLAR
BEARING SEAL TYPELABYRINTH
OUTER RING WIDTH0.8750 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
RC-15Interchangeable
interchangeable cross-reference
interchangeable
ER18Interchangeable
interchangeable cross-reference
interchangeable
10230Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ER18?
ER18 is a CAP,FILLER OPENING.
What parts can replace ER18?
There are 3 known substitutes for ER18: RC-15, ER18, 10230. Substitute compatibility should be verified for your specific system.
What is the NSN for ER18?
ER18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-789-3510. 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