PartsTable
Technical Data Sheet
MB19 ✓ Verified by PartsTable
· MOTOR
WHAT YOU NEED TO KNOW
NEMA frame determines mounting bolt pattern TEFC for outdoor, ODP for dry indoor only
C-face vs foot-mount — different mounting
PRODUCT OVERVIEW

The PACKING NUT is a the manufacturer industrial component. Key specifications include phase: THREE, current_type: AC, excitor_type: SEPARATELY EXCITED, housing_type: INCLOSED, mounting_type: SKID, overall_width: 32.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6115-00-081-2035, 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
MB19
NSN: 6115-00-081-2035
FSC: 6115
CAGE: 80049 — DEPARTMENT OF THE AIR FORCE (USA)
SPECIFICATIONS
phaseTHREE
current_typeAC
excitor_typeSEPARATELY EXCITED
housing_typeINCLOSED
mounting_typeSKID
overall_width32.000 INCHES NOMINAL IN
cooling_methodRADIATOR
inclosure_typeFULLY INCLOSED
overall_height49.000 INCHES NOMINAL IN
overall_length75.000 INCHES NOMINAL IN
frequency_rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM
ac_wattage_rating15.0 KILOWATTS AND 11.25 KILOWATTS
NSN6115-00-081-2035
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: MB19 · OEM ⚠ 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
FREQUENCY RATING: 60.0 HERTZ NOMINAL AND 50.0 HERTZ NOMINAL
CRANKING VOLTAGE IN VOLTS: 24.0
POWER FACTOR IN PERCENT: 80.0
INCLOSURE TYPE: FULLY INCLOSED
PRIME MOVER MANUFACTURER NAME: HERCULES ENGINE CO.
IDENTIFYING NUMBER: 55J4256+2Y2 PART NO.
CURRENT TYPE: AC
AC WATTAGE RATING: 15.0 KILOWATTS AND 11.2 KILOWATTS
TECHNICAL CHARACTERISTICS (FLIS)
FREQUENCY RATING60.0 HERTZ NOMINAL AND 50.0 HERTZ NOMINAL
CRANKING VOLTAGE IN VOLTS24.0
POWER FACTOR IN PERCENT80.0
INCLOSURE TYPEFULLY INCLOSED
PRIME MOVER MANUFACTURER NAMEHERCULES ENGINE CO.
IDENTIFYING NUMBER55J4256+2Y2 PART NO.
CURRENT TYPEAC
AC WATTAGE RATING15.0 KILOWATTS AND 11.2 KILOWATTS
OVERALL WIDTH32.000 INCHES NOMINAL IN
LINE TO NEUTRAL VOLTAGE IN VOLTS240.0 AND 120.0 AND 220.0 AND 110.0
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
55D6246-2Interchangeable
interchangeable cross-reference
interchangeable
MB16Interchangeable
interchangeable cross-reference
interchangeable
D52-640Interchangeable
interchangeable cross-reference
interchangeable
MILG26727Interchangeable
interchangeable cross-reference
interchangeable
MB18Interchangeable
interchangeable cross-reference
interchangeable
D52-539Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MB19?
MB19 is a PACKING NUT.
What parts can replace MB19?
There are 17 known substitutes for MB19: 55D6246-2, MB16, D52-640 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MB19?
MB19 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6115-00-081-2035. This indicates validated use in U.S. government and defense supply chains.
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