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2270370 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

2270370: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C OVERALL, bore_shape: STRAIGHT, flange_width: 0.0220 INCHES MINIMUM AND 0.0230 INCHES MAXIMUM IN, bore_diameter: 0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN, overall_width: 0.1084 INCHES MINIMUM AND 0.1094 INCHES MAXIMUM IN, load_direction: RADIAL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-443-5559, 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
2270370
NSN: 3110-00-443-5559
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OVERALL
bore_shapeSTRAIGHT
flange_width0.0220 INCHES MINIMUM AND 0.0230 INCHES MAXIMUM IN
bore_diameter0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
overall_width0.1084 INCHES MINIMUM AND 0.1094 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
flange_outside_diameter0.3590 INCHES NOMINAL IN
outer_ring_outside_diameter0.3122 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
NSN3110-00-443-5559
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 2270370 · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL CLEARANCE: 0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
•
FLANGE OUTSIDE DIAMETER: 0.3590 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL CLEARANCE0.0001 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN
FLANGE OUTSIDE DIAMETER0.3590 INCHES NOMINAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL WIDTH0.1084 INCHES MINIMUM AND 0.1094 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
FLANGE WIDTH0.0220 INCHES MINIMUM AND 0.0230 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
NM0820ZM3JReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2270370?
2270370 is a BEARING,BALL,ANNULAR.
What parts can replace 2270370?
There is 1 known substitute for 2270370: NM0820ZM3J. Substitute compatibility should be verified for your specific system.
What is the NSN for 2270370?
2270370 is cataloged in the U.S. Government catalog under NSN 3110-00-443-5559. 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.