2540-00-439-2871 INSULATION,VEHICULAR Index 2840-00-439-2882 SUPPORT ASSY,TURBIN

National Stock Number:
2920-00-439-2872

Federal Supply Class:
2920

National Item Identification Number:
004392872

Description:
GENERATOR,ENGINE ACCESSORY

Detail:
A generator primarily designed to be mounted on an internal combustion engine, and to be driven by the engine to keep the battery in a charged condition. May also supply current for the engine ignition system and/or electrical equipment which is connected to the battery circuit. Includes alternating current generators designed for use with a rectifier. Excludes the major generator of GENERATING SETS. For generators specifically designed for aircraft use and not mounted on the engine, see GENERATOR, DIRECT CURRENT.


Manufacturer Information:
258655680064NAVAL SHIP SYSTEMS COMMAND
A505A76761C E NIEHOFF & CO


Techincal Specification:
ANGULAR DEVIATION OF FIRST HOLE FROM TOP CENTER IN DEG170.0
ANGULAR DEVIATION OF SECOND HOLE FROM FIRST HOLE IN DEG190.0
BOTTOM MOUNTING HOLE DIAMETER0.441 INCHES MINIMUM AND 0.461 INCHES MAXIMUM
DISTANCE BETWEEN INSIDE SURFACES OF HINGE BRACKET6.125 INCHES NOMINAL
DISTANCE BETWEEN OUTSIDE SURFACES OF HINGE BRACKET7.125 INCHES NOMINAL
DISTANCE BETWEEN SHAFT CENTER AND BOTTOM MOUNTING HOLE CENTER4.688 INCHES NOMINAL
DISTANCE BETWEEN SHAFT CENTER AND TOP MOUNTING HOLE CENTER4.375 INCHES MINIMUM AND 4.875 INCHES MAXIMUM
DISTANCE FROM END TO KEYWAY CENTER1.062 INCHES NOMINAL
ENVIRONMENTAL PROTECTIONCORROSION RESISTANT AND FUNGUS RESISTANT
FURNISHED ITEMSRADIO INTERFERENCE SHIELDING
GROUND POLARITY TYPENEGATIVE
GROUNDING METHODINTERNAL
KEYWAY WIDTH0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM
MAXIMUM OPERATING ALTITUDE RATING10000.0 FEET
MAXIMUM OUTPUT CURRENT RATING IN AMPS230.0
MAXIMUM RATED ARMATURE SPEED IN RPM3000
MOUNTING HOLE THREAD DIRECTIONRIGHT-HAND
MOUNTING HOLE THREAD CLASS2B
MOUNTING HOLE THREAD DIAMETER0.375 INCHES NOMINAL
MOUNTING HOLE THREAD QUANTITY PER INCH16
MOUNTING HOLE THREAD SERIES DESIGNATORUNC
MOUNTING STYLEBRACKET MTD W/THREE MTG HOLES, TOP HOLE THREADED
SECOND STEP DIAMETER0.780 INCHES NOMINAL
SHAFT DRIVE END STYLESTRAIGHT SHAFT END, THREADED, W/KEYWAY
SHAFT ROTATION DIRECTIONCLOCKWISE
SUBMERSIBILITYSUBMERSIBLE
THREAD CLASS2A
THREAD DIAMETER0.750 INCHES NOMINAL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.828 INCHES NOMINAL
THREAD QUANTITY PER INCH16
THREAD SERIESUNF
UNTHREADED PORTION LENGTH1.297 INCHES NOMINAL
VOLTAGE IN VOLTS28.0


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