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E-1213-103 — RING,BEARING,INNER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

E-1213-103: RING,BEARING,INNER.

The RING,BEARING,INNER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 2.5585 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN, overall_width: 0.7350 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN, surface_finish: GROUND, style_designator: INNER RING, ROLLER, CYLINDRICAL. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-099-3670, 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
E-1213-103
NSN: 3110-01-099-3670
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter2.5585 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
overall_width0.7350 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN
surface_finishGROUND
style_designatorINNER RING, ROLLER, CYLINDRICAL
overall_outside_diameter3.1653 INCHES MINIMUM AND 3.1655 INCHES MAXIMUM IN
NSN3110-01-099-3670
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: E-1213-103 · 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
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: INNER RING, ROLLER, CYLINDRICAL
•
OVERALL OUTSIDE DIAMETER: 3.1653 INCHES MINIMUM AND 3.1655 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
BORE DIAMETER: 2.5585 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISHGROUND
STYLE DESIGNATORINNER RING, ROLLER, CYLINDRICAL
OVERALL WIDTH0.7350 INCHES MINIMUM AND 0.7400 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.1653 INCHES MINIMUM AND 3.1655 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
BORE DIAMETER2.5585 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
230843Reference document
Same NSN cross-reference
Reference document — Secondary reference
630885C1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is E-1213-103?
E-1213-103 is a RING,BEARING,INNER.
What parts can replace E-1213-103?
There are 2 known substitutes for E-1213-103: 230843, 630885C1. Substitute compatibility should be verified for your specific system.
What is the NSN for E-1213-103?
E-1213-103 is cataloged in the U.S. Government catalog under NSN 3110-01-099-3670. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.