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B15931 — TRANSFORMER,POWER

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

B15931: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OUTER LAYER, slot_width: 0.5000 INCHES NOMINAL FIRST IN, corner_shape: CHAMFERED ALL CORNERS, hole_diameter: 0.7520 INCHES NOMINAL FIRST IN, overall_width: 4.125 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-343-2744, 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
B15931
NSN: 3120-00-343-2744
NIINs: 003432744, 010899708
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 73160 — FEDERAL-MOGUL CORP POWERTRAIN PRODUCTS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OUTER LAYER
slot_width0.5000 INCHES NOMINAL FIRST IN
corner_shapeCHAMFERED ALL CORNERS
hole_diameter0.7520 INCHES NOMINAL FIRST IN
overall_width4.125 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height3.437 INCHES NOMINAL IN
overall_length4.750 INCHES MAXIMUM IN
mounting_methodSLOT SINGLE GROUP
frequency_rating47.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
special_featuresEXTERNAL RECTIFIER CIRCUIT FOR SECONDARY
style_designatorHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
NSN3120-00-343-2744
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: B15931 · 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
•
CORNER SHAPE: CHAMFERED ALL CORNERS
•
BODY OUTSIDE DIAMETER: 10.0000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 9.9920 INCHES NOMINAL IN
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 1 HOLE AND 1 SLOT
•
MATERIAL: COPPER ALLOY OUTER LAYER
TECHNICAL CHARACTERISTICS
CORNER SHAPECHAMFERED ALL CORNERS
BODY OUTSIDE DIAMETER10.0000 INCHES NOMINAL IN
STYLE DESIGNATORHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH4.0000 INCHES NOMINAL IN
BODY INSIDE DIAMETER9.9920 INCHES NOMINAL IN
SPECIAL FEATURESCHAMFER LENGTH 0.125 INCH AND 45 DEGREE ANGLE ON ALL CORNERS IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE AND 1 SLOT
MATERIALCOPPER ALLOY OUTER LAYER
SLOT WIDTH0.5000 INCHES NOMINAL FIRST IN
HOLE DIAMETER0.7520 INCHES NOMINAL FIRST IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B15931?
B15931 is a TRANSFORMER,POWER.
What is the NSN for B15931?
B15931 is cataloged in the U.S. Government catalog under NSN 3120-00-343-2744. This indicates validated use in U.S. government and defense supply chains.
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