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2637509-56 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2637509-56: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OUTER LAYER, overall_length: 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN, body_inside_diameter: 1.3750 INCHES NOMINAL IN, body_outside_diameter: 1.5310 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-280-6897, 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
2637509-56
NSN: 3120-01-280-6897
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 26124 — GGB LLC (USA)
SPECIFICATIONS
materialSTEEL OUTER LAYER
overall_length0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
body_inside_diameter1.3750 INCHES NOMINAL IN
body_outside_diameter1.5310 INCHES NOMINAL IN
NSN3120-01-280-6897
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2637509-56 · 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
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 1.5310 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.3750 INCHES NOMINAL IN
•
MATERIAL: STEEL OUTER LAYER
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER1.5310 INCHES NOMINAL IN
OVERALL LENGTH0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
BODY INSIDE DIAMETER1.3750 INCHES NOMINAL IN
MATERIALSTEEL OUTER LAYER
MATERIALCOPPER ALLOY INNER LAYER
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES 1
22DU12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 2637509-56?
2637509-56 is a BEARING,SLEEVE.
What parts can replace 2637509-56?
There is 1 known substitute for 2637509-56: 22DU12. Substitute compatibility should be verified for your specific system.
What is the NSN for 2637509-56?
2637509-56 is cataloged in the U.S. Government catalog under NSN 3120-01-280-6897. 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.