618381-000

View detailed technical data, stock status, and sourcing information for: 618381-000
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-924-4165

Item Name Code

02073

Assigment Date

01/20/1966 (60 years ago)

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.

1.0570 inches minimum and 1.0620 inches maximum flange diameter, standard round c body style, 0.9995 inches minimum and 1.0000 inches maximum shoulder diameter, 2.3560 inches nominal overall length, 0.6245 inches minimum and 0.6250 inches maximum pilot diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: standard round c
Shoulder Diameter: 0.9995 inches minimum and 1.0000 inches maximum
Pilot Diameter: 0.6245 inches minimum and 0.6250 inches maximum
Overall Length: 2.3560 inches nominal
Flange Diameter: 1.0570 inches minimum and 1.0620 inches maximum
Flange Thickness: 0.0930 inches nominal
Undercut Diameter: 0.9750 inches nominal
Undercut Width: 0.0620 inches nominal
Shaft Diameter: 0.1870 inches minimum and 0.1872 inches maximum single shaft
Shaft Length: 0.5620 inches nominal single shaft
Fragility Factor: moderately rugged
Maximum Temp Rise: 20.0 celsius
Body Size: 11
Rotor Input Voltage Rating In Volts: 115.0 nominal
Frequency In Hertz: 400.0 nominal
Rotor Input Current Rating: 31.0 milliamperes maximum
Rotor Input Electrical Power Rating: 490.0 milliwatts nominal
Zro Impedance Magnitude In Ohms: 3720.00 minimum and 4700.00 maximum
Zro Impedance Angle In Deg: 80.00 minimum and 84.00 maximum
Zss Impedance Magnitude In Ohms: 410.00 minimum and 500.00 maximum
Zss Impedance Angle In Deg: 17.00 minimum and 26.00 maximum
Phase Shift Angle In Deg: 4.500 input to output nominal
Maximum Fundamental Null Voltage In Millivolts Per Volt: 45.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt: 75.00
Electrical Error Angular Range In Minutes: -7.0 to 7.0
Spline Tooth Quantity: 21 single shaft
Actuator Friction Torque At Plus 25 Deg Celsius: 0.07 inch-ounces maximum
Alignment Hole Quantity: 4
Pilot Length: 0.0620 inches nominal
Shoulder Length: unable to decode
Mounting Surface To Terminal End Distance: 1.7940 inches maximum
Spline Tooth Diametral Pitch: 120 single shaft
Shaft Thread Series Designator: unf single shaft
Shaft Thread Direction: right-hand single shaft
Shaft Thread Class: 2a single shaft
Body Material: steel corrosion resisting
Terminal Location: rear
Shaft Thread Length: 0.1900 inches nominal single shaft
Shaft Type: spline w/threads single shaft
Alignment Hole Depth: 0.1250 inches minimum
Transformation Ratio: 0.783 stator to rotor nominal
Alignment Hole Bolt Circle Diameter: 0.8120 inches nominal
Shaft Nominal Thread Size: 0.190 inches single shaft
Test Data Document: "81349-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.)."
Terminal Type And Quantity: 5 screw
Specification/Standard Data: 81349-mil-s-20708/2 government specification

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5990-00-165-9107	No Name Available	06/01/1976
5990-01-281-6428	No Name Available	05/01/1995

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618381-000	Transmitter Synchro
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