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SA-5139-B — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

SA-5139-B: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include flange_width: 0.3750 INCHES NOMINAL IN, hole_diameter: 0.2188 INCHES NOMINAL FIRST IN, overall_length: 5.3750 INCHES NOMINAL IN, special_features: FLANGE FLATTED ONE END, body_inside_diameter: 1.6875 INCHES NOMINAL IN, flange_outside_diameter: 4.0000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-341-8993, 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
SA-5139-B
NSN: 3120-01-341-8993
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 09780 — BURCH COMPANY INC, THE (USA)
SPECIFICATIONS
flange_width0.3750 INCHES NOMINAL IN
hole_diameter0.2188 INCHES NOMINAL FIRST IN
overall_length5.3750 INCHES NOMINAL IN
special_featuresFLANGE FLATTED ONE END
body_inside_diameter1.6875 INCHES NOMINAL IN
flange_outside_diameter4.0000 INCHES NOMINAL IN
antirotation/lubrication_type_and_quantity3 HOLE
NSN3120-01-341-8993
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SA-5139-B · 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
•
FLANGE OUTSIDE DIAMETER: 4.0000 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.6875 INCHES NOMINAL IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 3 HOLE
•
FLANGE WIDTH: 0.3750 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.2188 INCHES NOMINAL FIRST IN
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER4.0000 INCHES NOMINAL IN
OVERALL LENGTH5.3750 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.6875 INCHES NOMINAL IN
SPECIAL FEATURESFLANGE FLATTED ONE END
ANTIROTATION/LUBRICATION TYPE AND QUANTITY3 HOLE
FLANGE WIDTH0.3750 INCHES NOMINAL IN
HOLE DIAMETER0.2188 INCHES NOMINAL FIRST IN
HOLE DIAMETER0.2188 INCHES NOMINAL SECOND IN
HOLE DIAMETER0.4219 INCHES NOMINAL THIRD IN
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

No substitute or cross-reference records for this part.

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 SA-5139-B?
SA-5139-B is a BEARING,SLEEVE.
What is the NSN for SA-5139-B?
SA-5139-B is cataloged in the U.S. Government catalog under NSN 3120-01-341-8993. 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.