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4W9129 — GENERATOR SET,DIESEL ENGINE

✓ Government record, cited
CATERPILLAR INC DIV CATERPILLAR DEFENSE · MOTOR
PRODUCT OVERVIEW

4W9129: GENERATOR SET,DIESEL ENGINE.

The GENERATOR SET,DIESEL ENGINE is a CATERPILLAR INC DIV CATERPILLAR DEFENSE industrial component. Key specifications include PHASE: THREE, CURRENT TYPE: AC, FREQUENCY RATING: 60.0 HERTZ NOMINAL, SPECIAL FEATURES: USED ON LARGE TUG BOAT,NSN 1925-01-247-7110, AC WATTAGE RATING: 275.0 KILOWATTS, IDENTIFYING NUMBER: SR4 MODEL NO.. This part is cataloged in the U.S.

Government catalog under NSN 6115-01-356-9868, 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
4W9129
NSN: 6115-01-356-9868
FSC: 6115 — Generators and Generator Sets, Electrical
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
PHASETHREE
CURRENT TYPEAC
FREQUENCY RATING60.0 HERTZ NOMINAL
SPECIAL FEATURESUSED ON LARGE TUG BOAT,NSN 1925-01-247-7110
AC WATTAGE RATING275.0 KILOWATTS
IDENTIFYING NUMBERSR4 MODEL NO.
POWER FACTOR IN PERCENT80.0
PRIME MOVER STARTING METHODCOMPRESSED AIR
LINE TO LINE VOLTAGE IN VOLTS450.0
PRIME MOVER MANUFACTURER NAMECATERPILLAR TRACTOR CO
PRIME MOVER IDENTIFYING NUMBER3408-DI-TA-JW MODEL NO.
NSN6115-01-356-9868
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 4W9129 · CATERPILLAR INC DIV CATERPILLAR DEFENSE ⚠ VERIFY BEFORE ORDERING NEMA frame size determines mounting bolt pattern — not interchangeable. 56C ≠ 143T bolt pattern. C-face vs foot-mount vs flange — different mounting, same HP doesn't mean drop-in ✓ BROKER TIP TEFC = outdoor/washdown OK. ODP = dry indoor only. TENV = no external fan, explosion-proof areas. 1750 RPM = 4-pole (most common), 3450 RPM = 2-pole, 1150 RPM = 6-pole PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
PHASE: THREE
•
CURRENT TYPE: AC
•
LINE TO LINE VOLTAGE IN VOLTS: 450.0
•
PRIME MOVER IDENTIFYING NUMBER: 3408-DI-TA-JW MODEL NO.
•
IDENTIFYING NUMBER: SR4 MODEL NO.
•
POWER FACTOR IN PERCENT: 80.0
•
AC WATTAGE RATING: 275.0 KILOWATTS
•
PRIME MOVER MANUFACTURER NAME: CATERPILLAR TRACTOR CO
TECHNICAL CHARACTERISTICS
PHASETHREE
CURRENT TYPEAC
LINE TO LINE VOLTAGE IN VOLTS450.0
PRIME MOVER IDENTIFYING NUMBER3408-DI-TA-JW MODEL NO.
IDENTIFYING NUMBERSR4 MODEL NO.
POWER FACTOR IN PERCENT80.0
AC WATTAGE RATING275.0 KILOWATTS
PRIME MOVER MANUFACTURER NAMECATERPILLAR TRACTOR CO
PRIME MOVER STARTING METHODCOMPRESSED AIR
SPECIAL FEATURESUSED ON LARGE TUG BOAT,NSN 1925-01-247-7110
OTHER ITEMS IN FSC 6115 — Generators and Generator Sets, Electrical
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6115-00-000-0100 6115-00-001-4612 6115-00-001-8553 6115-00-001-8853 6115-00-004-1782 6115-00-004-2766 6115-00-004-3786 6115-00-004-3787
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 4W9129?
4W9129 is a GENERATOR SET,DIESEL ENGINE manufactured by CATERPILLAR INC DIV CATERPILLAR DEFENSE.
What is the NSN for 4W9129?
4W9129 is cataloged in the U.S. Government catalog under NSN 6115-01-356-9868. This indicates validated use in U.S. government and defense supply chains.
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