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Technical Data Sheet

77C708676 — Technical Data Sheet

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LOCKHEED MARTIN CORPORATION DIV RMS · 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 MOTOR-TACHOMETER GENERATOR is a LOCKHEED MARTIN CORPORATION DIV RMS industrial component. Key specifications include PHASE: TWO INPUT, TEMP RATING: -55.0 OPERATING CELSIUS AND 65.0 OPERATING CELSIUS, CURRENT TYPE: AC INPUT, EXCITOR TYPE: SEPARATELY EXCITED, POWER RATING: 7.000 WATTS INPUT, OVERALL WIDTH: 1.065 INCHES 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 6105-00-078-2558, 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
77C708676
NSN: 6105-00-078-2558
FSC: 6105
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
PHASETWO INPUT
TEMP RATING-55.0 OPERATING CELSIUS AND 65.0 OPERATING CELSIUS
CURRENT TYPEAC INPUT
EXCITOR TYPESEPARATELY EXCITED
POWER RATING7.000 WATTS INPUT
OVERALL WIDTH1.065 INCHES IN
SPLINE LENGTH0.2900 INCHES NOMINAL SINGLE END IN
COOLING METHODNONVENTILATED
OVERALL LENGTH2.720 INCHES IN
SHAFT DIAMETER0.1237 INCHES MINIMUM AND 0.1247 INCHES MAXIMUM SINGLE END IN
MOUNTING METHODCLAMP RING(S)
SPLINE QUANTITY13 SINGLE END
NSN6105-00-078-2558
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 77C708676 · LOCKHEED MARTIN CORPORATION DIV RMS ⚠ 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
INCLOSURE SPECIFICATION: COMMERCIAL
SHAFT END CHARACTERISTIC: A14 SINGLE STYLE SINGLE END
CONTROL FIELD VOLTAGE TYPE AND RATING IN VOLTS: 15.0 AC AND 30.0 AC
TEMP RATING: -55.0 OPERATING CELSIUS AND 65.0 OPERATING CELSIUS
EXCITOR TYPE: SEPARATELY EXCITED
LENGTH OF SHAFT FROM HOUSING: 0.376 INCHES SINGLE END IN
TERMINAL TYPE AND QUANTITY: 10 WIRE LEAD
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH1.065 INCHES IN
INCLOSURE SPECIFICATIONCOMMERCIAL
SHAFT END CHARACTERISTICA14 SINGLE STYLE SINGLE END
CONTROL FIELD VOLTAGE TYPE AND RATING IN VOLTS15.0 AC AND 30.0 AC
TEMP RATING-55.0 OPERATING CELSIUS AND 65.0 OPERATING CELSIUS
EXCITOR TYPESEPARATELY EXCITED
LENGTH OF SHAFT FROM HOUSING0.376 INCHES SINGLE END IN
TERMINAL TYPE AND QUANTITY10 WIRE LEAD
CURRENT TYPEAC INPUT
MOUNTING FACILITY TYPE AND QUANTITY1 CLAMP COLLAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
1.250-17Interchangeable
interchangeable cross-reference
interchangeable
1-250-1 1-161LInterchangeable
interchangeable cross-reference
interchangeable
1549704-7Interchangeable
interchangeable cross-reference
interchangeable
G9981PC80Interchangeable
interchangeable cross-reference
interchangeable
322660PC125Interchangeable
interchangeable cross-reference
interchangeable
N11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77C708676?
77C708676 is a MOTOR-TACHOMETER GENERATOR manufactured by LOCKHEED MARTIN CORPORATION DIV RMS.
What parts can replace 77C708676?
There are 8 known substitutes for 77C708676: 1.250-17, 1-250-1 1-161L, 1549704-7 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77C708676?
77C708676 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-00-078-2558. This indicates validated use in U.S. government and defense supply chains.
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