Part Details | ENGINE ACCESSORY GENERATOR
2920-00-439-2872 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.
Alternate Parts: A505A, 2586556, 2920-00-439-2872, 00-439-2872, 2920004392872, 004392872
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 29 | NOV 28, 1969 | 00-439-2872 | 17311 ( GENERATOR, ENGINE ACCESSORY ) |
REFERENCE DRAWINGS & PICTURES
ROUND FLANGE WITH HOLES EQUALLY SPACED
STRAIGHT SHAFT END, THREADED, W/KEYWAY
Cross Reference | NSN 2920-00-439-2872
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A505A | 76761 | C. E. NIEHOFF & CO. |
| 2586556 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
Technical Data | NSN 2920-00-439-2872
| Characteristic | Specifications |
|---|---|
| VOLTAGE IN VOLTS | 28.0 |
| MAXIMUM OUTPUT CURRENT RATING IN AMPS | 230.0 |
| MAXIMUM RATED ARMATURE SPEED IN RPM | 3000 |
| GROUNDING METHOD | INTERNAL |
| GROUND POLARITY TYPE | NEGATIVE |
| SHAFT ROTATION DIRECTION | CLOCKWISE |
| MOUNTING STYLE | 5 ROUND FLANGE WITH HOLES EQUALLY SPACED |
| DISTANCE BETWEEN SHAFT CENTER AND BOTTOM MOUNTING HOLE CENTER | 4.688 INCHES NOMINAL |
| DISTANCE BETWEEN SHAFT CENTER AND TOP MOUNTING HOLE CENTER | 4.375 INCHES MINIMUM AND 4.875 INCHES MAXIMUM |
| DISTANCE BETWEEN INSIDE SURFACES OF HINGE BRACKET | 6.125 INCHES NOMINAL |
| DISTANCE BETWEEN OUTSIDE SURFACES OF HINGE BRACKET | 7.125 INCHES NOMINAL |
| BOTTOM MOUNTING HOLE DIAMETER | 0.441 INCHES MINIMUM AND 0.461 INCHES MAXIMUM |
| ANGULAR DEVIATION OF FIRST HOLE FROM TOP CENTER IN DEG | 170.0 |
| ANGULAR DEVIATION OF SECOND HOLE FROM FIRST HOLE IN DEG | 190.0 |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC |
| MOUNTING HOLE THREAD DIAMETER | 0.375 INCHES NOMINAL |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 16 |
| MOUNTING HOLE THREAD CLASS | 2B |
| MOUNTING HOLE THREAD DIRECTION | RIGHT-HAND |
| SHAFT DRIVE END STYLE | STRAIGHT SHAFT END, THREADED, W/KEYWAY |
| THREAD LENGTH | 0.828 INCHES NOMINAL |
| SECOND STEP DIAMETER | 0.780 INCHES NOMINAL |
| KEYWAY WIDTH | 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| UNTHREADED PORTION LENGTH | 1.297 INCHES NOMINAL |
| DISTANCE FROM END TO KEYWAY CENTER | 1.062 INCHES NOMINAL |
| THREAD SERIES | UNF |
| THREAD DIAMETER | 0.750 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 16 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| SUBMERSIBILITY | SUBMERSIBLE |
| MAXIMUM OPERATING ALTITUDE RATING | 10000.0 FEET |
| ENVIRONMENTAL PROTECTION | CORROSION RESISTANT AND FUNGUS RESISTANT |
| FURNISHED ITEMS | RADIO INTERFERENCE SHIELDING |