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Technical Data Sheet
PartsTable / COMPONENT / 278-077-291
278-077-291 ✓ 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 278-077-291 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-01-513-7715, 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
278-077-291
NSN: 6105-01-513-7715
FSC: 6105
CAGE: 50893 — RIDGE TOOL COMPANY (USA)
SPECIFICATIONS
Part Number278-077-291
NSN6105-01-513-7715
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 278-077-291 · 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
•
CURRENT RATING METHOD: LOCKED ROTOR
•
KEYWAY LENGTH: 1.375 INCHES NOMINAL SINGLE END IN
•
FRAME SIZE DESIGNATION: 56
•
DUTY CYCLE: CONTINUOUS
•
CURRENT RATING IN AMPS: 7.200 SINGLE INPUT
•
ROTOR SPEED RATING IN RPM: 1725.0 SINGLE FULL LOAD
•
SHAFT CENTER TO MOUNTING SURFACE DISTANCE: 1.375 INCHES SINGLE END IN
•
SHAFT ROTATION DIRECTION: CLOCKWISE SINGLE END
TECHNICAL CHARACTERISTICS (FLIS)
CURRENT RATING METHODLOCKED ROTOR
KEYWAY LENGTH1.375 INCHES NOMINAL SINGLE END IN
FRAME SIZE DESIGNATION56
DUTY CYCLECONTINUOUS
CURRENT RATING IN AMPS7.200 SINGLE INPUT
ROTOR SPEED RATING IN RPM1725.0 SINGLE FULL LOAD
SHAFT CENTER TO MOUNTING SURFACE DISTANCE1.375 INCHES SINGLE END IN
SHAFT ROTATION DIRECTIONCLOCKWISE SINGLE END
INCLOSURE SPECIFICATIONNEMA
PHASESINGLE INPUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
P7767520REV3PT1Interchangeable
interchangeable cross-reference
interchangeable
23517Interchangeable
interchangeable cross-reference
interchangeable
23100Interchangeable
interchangeable cross-reference
interchangeable
348349Interchangeable
interchangeable cross-reference
interchangeable
3120PL1024143Interchangeable
interchangeable cross-reference
interchangeable
SW32916Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 278-077-291?
278-077-291 is a 278-077-291.
What parts can replace 278-077-291?
There are 8 known substitutes for 278-077-291: P7767520REV3PT1, 23517, 23100 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 278-077-291?
278-077-291 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-01-513-7715. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026