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557244 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

557244: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING RETAINER, bore_shape: STRAIGHT, bore_diameter: 0.5903 INCHES MINIMUM AND 0.5906 INCHES MAXIMUM IN, overall_width: 0.4326 INCHES MINIMUM AND 0.4331 INCHES MAXIMUM IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-758-7408, 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
557244
NSN: 3120-00-758-7408
NIINs: 007587408, 009213355, 016636554
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING RETAINER
bore_shapeSTRAIGHT
bore_diameter0.5903 INCHES MINIMUM AND 0.5906 INCHES MAXIMUM IN
overall_width0.4326 INCHES MINIMUM AND 0.4331 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0009 INCHES MAXIMUM RADIAL IN
overall_outside_diameter1.3775 INCHES MINIMUM AND 1.3780 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE INNER RING
NSN3120-00-758-7408
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 557244 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 3
75201A30Reference document
Same NSN cross-reference
Reference document — Secondary reference
KT53XL093Reference document
Same NSN cross-reference
Reference document — Secondary reference
137-517-9306Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 557244?
557244 is a BEARING,BALL,ANNULAR.
What parts can replace 557244?
There are 3 known substitutes for 557244: 75201A30, KT53XL093, 137-517-9306. Substitute compatibility should be verified for your specific system.
What is the NSN for 557244?
557244 is cataloged in the U.S. Government catalog under NSN 3120-00-758-7408. 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.