PartsTable
Technical Data Sheet
PartsTable / MRO / ER12
ER12 ✓ Verified by PartsTable
Chief · MRO · MRO_GENERAL
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

12U, 16" deep economy rack is a great value for housing audio and video gear. Finished in Black laminate.<br><br>Ships knocked down and is quick to assemble. Key specifications include material: COPPER OVERALL, body_style: CYLINDRICAL HOLE/SLOT MOUNTED, bore_shape: STRAIGHT, body_length: 1.312 INCHES NOMINAL IN, shaft_style: ROUND, shaft_length: 1.000 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 3110-00-114-9488, 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
MRO→ MRO_GENERAL→ ER12
NSN: 3110-00-114-9488
FSC: 3110
CAGE: 02695 — MORSE INDUSTRIAL CORP SEALMASTER BEARING DIV SUB OF EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
materialCOPPER OVERALL
body_styleCYLINDRICAL HOLE/SLOT MOUNTED
bore_shapeSTRAIGHT
body_length1.312 INCHES NOMINAL IN
shaft_styleROUND
cam_quantity2
shaft_length1.000 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter2.000 INCHES NOMINAL IN
bore_diameter0.7500 INCHES MINIMUM AND 0.7504 INCHES MAXIMUM IN
cubic_measure100.000 CUBIC INCHES
seal_quantity2
NSN3110-00-114-9488
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ER12 · Chief ⚠ 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
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: DOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
•
FEATURES PROVIDED: SNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
•
OUTER RING WIDTH: 0.6250 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SEAL QUANTITY: 2
•
BEARING SEAL TYPE: LABYRINTH
TECHNICAL CHARACTERISTICS (FLIS)
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONDOD-G-24508 MIL SPEC SINGLE MATERIAL RESPONSE
FEATURES PROVIDEDSNAP RING-GROOVE MOUNTING AND MOUNTING GROOVE
SPECIAL FEATURESW/FELT ENCLOSED SEALS
OUTER RING WIDTH0.6250 INCHES NOMINAL IN
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
SEAL QUANTITY2
BEARING SEAL TYPELABYRINTH
BORE SHAPESTRAIGHT
LUBRICATION MATERIALGREASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
G4036Interchangeable
interchangeable cross-reference
interchangeable
387889C5Interchangeable
interchangeable cross-reference
interchangeable
10122Interchangeable
interchangeable cross-reference
interchangeable
892089Interchangeable
interchangeable cross-reference
interchangeable
PR-1,2Interchangeable
interchangeable cross-reference
interchangeable
ER-1,2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ER12?
ER12 is a RESISTOR,VARIABLE,WIRE WOUND,PRE manufactured by Chief. It is classified as a MRO (MRO_GENERAL).
What parts can replace ER12?
There are 11 known substitutes for ER12: G4036, 387889C5, 10122 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ER12?
ER12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-114-9488. 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