NSN 5990-00-018-9721

Part Details | DIFFERENTIAL TRANSMITTER SYNCHRO

5990-00-018-9721 A synchro, the rotor of which is mechanically positioned for modifying electrical angular information, received from a transmitter synchro and transmitting to receiver synchro or control transformer synchro electrical information corresponding to the sum or difference of the electrical input angle and its rotor position angle. Does not include variable resistors, goniometers, variable transformers, or items with dials.

Alternate Parts: 23TDX1229, 23TDX6, M20708550001, M20708-550-001, MILS2070855, MIL-S-20708/55, 23TDX6C, 23TDX6B, 23TDX6, M207085501C, M20708/55-01C, M2070855001, M20708/55-001, 5990-00-018-9721, 00-018-9721, 5990000189721, 000189721

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
59APR 25, 196700-018-972102071 ( SYNCHRO, DIFFERENTIAL TRANSMITTER )
REFERENCE DRAWINGS & PICTURES

STANDARD ROUND D

Cross Reference | NSN 5990-00-018-9721
Part Number Cage Code Manufacturer
23TDX122914404AMETEK TECHNICAL & INDUSTRIALPRODUCTS, INC.
23TDX610112GENERAL DYNAMICS GLOBAL IMAGINGTECHNOLOGIES, INC.
M20708-550-00181349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
MIL-S-20708/5581349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
23TDX6C81349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
23TDX6B81349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
23TDX681349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
M20708/55-01C81349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
M20708/55-00181349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
Technical Data | NSN 5990-00-018-9721
Characteristic Specifications
BODY SIZE23
STATOR INPUT VOLTAGE RATING IN VOLTS90.0 NOMINAL
STATOR INPUT CURRENT RATING215.0 MILLIAMPERES MAXIMUM
STATOR INPUT ELECTRICAL POWER RATING4.8 WATTS MAXIMUM
FREQUENCY IN HERTZ60.0 NOMINAL
ZSO IMPEDANCE MAGNITUDE IN OHMS370.00 MINIMUM AND 460.00 MAXIMUM
ZSO IMPEDANCE ANGLE IN DEG74.00 MINIMUM AND 78.00 MAXIMUM
ZRS IMPEDANCE MAGNITUDE IN OHMS175.00 MINIMUM AND 220.00 MAXIMUM
ZRS IMPEDANCE ANGLE IN DEG15.00 MINIMUM AND 20.00 MAXIMUM
TRANSFORMATION RATIO1.154 ROTOR TO STATOR NOMINAL
PHASE SHIFT ANGLE IN DEG11.500 INPUT TO OUTPUT NOMINAL
MAXIMUM TEMP RISE25.0 DEG CELSIUS
ELECTRICAL ERROR ANGULAR RANGE IN MINUTESM6.0/P6.0
ACTUATOR FRICTION TORQUE AT PLUS 25 DEG CELSIUS0.20 INCH-OUNCES MAXIMUM
TORQUE GRADIENT PER ANGULAR DEG0.030 INCH-OUNCES MINIMUM
BODY STYLE STANDARD ROUND D
SHOULDER DIAMETER1.9850 INCHES MINIMUM AND 1.9900 INCHES MAXIMUM
PILOT DIAMETER0.5950 INCHES NOMINAL
SECOND SHOULDER DIAMETER1.9985 INCHES MINIMUM AND 1.9995 INCHES MAXIMUM
SECOND SHOULDER LENGTH0.1700 INCHES NOMINAL
OVERALL LENGTH4.5490 INCHES NOMINAL
FLANGE DIAMETER2.2490 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM
FLANGE THICKNESS0.2500 INCHES NOMINAL
BODY DIAMETER1.9900 INCHES MAXIMUM
PILOT LENGTH0.0430 INCHES NOMINAL
SHOULDER LENGTH0.2500 INCHES NOMINAL
AFT OF FIRST FLANGE DIAMETER1.9985 INCHES MINIMUM AND 1.9995 INCHES MAXIMUM
MOUNTING SURFACE TO TERMINAL END DISTANCE3.8300 INCHES NOMINAL
TERMINAL TYPE AND QUANTITY6 SCREW
TERMINAL LOCATION REAR
BODY MATERIAL STEEL, STAINLESS
TEST DATA DOCUMENT81349-MIL-S-20708 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
SPECIFICATION/STANDARD DATA81349-MIL--20708 TO 55 GOVERNMENT SPECIFICATION
SHAFT MAXIMUM RADIAL PLAY0.0010 INCHES
SHAFT RADIAL PLAY TEST POINT0.125 INCHES NOMINAL
SHAFT RADIAL PLAY DETERMINING WEIGHT8.0 OUNCES
SHAFT END PLAY0.0025 INCHES NOMINAL
SHAFT END PLAY DETERMINING WEIGHT16.0 OUNCES
SHAFT MAXIMUM RUNOUT0.0008 INCHES