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IRA-3 — RING,BEARING,INNER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

IRA-3: RING,BEARING,INNER.

The RING,BEARING,INNER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN, overall_width: 0.5260 INCHES MINIMUM AND 0.5360 INCHES MAXIMUM IN, surface_finish: GROUND, style_designator: SOLID INNER RACE, JOURNAL AND NEEDLE. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-396-2760, 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
IRA-3
NSN: 3110-01-396-2760
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
overall_width0.5260 INCHES MINIMUM AND 0.5360 INCHES MAXIMUM IN
surface_finishGROUND
style_designatorSOLID INNER RACE, JOURNAL AND NEEDLE
overall_outside_diameter0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
standard_tolerance_designationABEC NO.7
NSN3110-01-396-2760
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: IRA-3 · 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: SOLID INNER RACE, JOURNAL AND NEEDLE
•
OVERALL OUTSIDE DIAMETER: 0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.7
•
BORE DIAMETER: 0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISHGROUND
STYLE DESIGNATORSOLID INNER RACE, JOURNAL AND NEEDLE
OVERALL WIDTH0.5260 INCHES MINIMUM AND 0.5360 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER0.3745 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONABEC NO.7
BORE DIAMETER0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is IRA-3?
IRA-3 is a RING,BEARING,INNER.
What is the NSN for IRA-3?
IRA-3 is cataloged in the U.S. Government catalog under NSN 3110-01-396-2760. 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.