Differential Transmitter Synchro

18CDX1255

(NSN) National Stock Number

5990-00-018-9719

Federal Supply Classification

5990 Synchros and Resolvers

Item Name Code

02071

Schedule B Code

9014900000

Summary

Standard round c body style, 1.5615 inches minimum and 1.5620 inches maximum shoulder diameter, 0.9370 inches minimum and 0.9375 inches maximum pilot diameter, 3.2100 inches nominal overall length, 1.7450 inches minimum and 1.7500 inches maximum flange diameter, 0.0930 inches nominal flange thickness

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
1	-	-	ZZ

Identification

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.

INC	FIIG	Concept	Condition
02071	A07800	1	1

Specifications

Body Style

standard round c

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the body.

Shoulder Diameter

1.5615 inches minimum and 1.5620 inches maximum

Details

The length of a straight line which passes through the center of a shoulder,and terminates at the circumference.

Pilot Diameter

0.9370 inches minimum and 0.9375 inches maximum

Details

The length of a straight line which passes through the center of that portion used to guide the item and terminates at the circumference.

Overall Length

3.2100 inches nominal

Details

The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

Flange Diameter

1.7450 inches minimum and 1.7500 inches maximum

Details

The length of a straight line which passes through the center of a flange,and terminates at the circumference.

Flange Thickness

0.0930 inches nominal

Details

A measurement of the smallest dimension of a flange,in distinction from length or width.

Undercut Diameter

1.6250 inches nominal

Details

None.

Undercut Width

0.0780 inches nominal

Details

None.

Shaft Diameter

0.1870 inches minimum and 0.1872 inches maximum single shaft

Details

The length of a straight line which passes through the center of a shaft,and terminates at the circumference.

Shaft Length

0.5400 inches nominal single shaft

Details

A measurement of the longest dimension of the shaft,in distinction from width.

Maximum Temp Rise

20.0 deg celsius

Details

The maximum permissible temperature increase in the item as a result of its operation under normal conditions.

Body Size

Details

An alpha and/or numeric designation indicating the size by which the body is identified.

Stator Input Voltage Rating In Volts

90.0 nominal

Details

The value of the primary excitation voltage for which the stator is rated,expressed in volts.

Stator Input Current Rating

128.0 milliamperes maximum

Details

The value of the primary excitation current for which the stator is rated,with rotor /secondary/ circuit open.

Stator Input Electrical Power Rating

950.0 milliwatts nominal

Details

The value of the primary /electrical/ excitation power for which the stator is rated.

Frequency In Hertz

400.0 nominal

Details

The cycles per second /hertz/ of the alternating current.

Zso Impedance Magnitude In Ohms

610.00 minimum and 785.00 maximum

Details

The magnitude part /z/ of the stator impedance with the rotor open /zso/,expressed in ohms.

Zso Impedance Angle In Deg

83.00 minimum and 86.50 maximum

Details

The angle part /o/ of the stator impedance with the rotor open /zso/,expressed in degrees.

Zrs Impedance Magnitude In Ohms

76.00 minimum and 110.00 maximum

Details

The magnitude part /z/ of the rotor impedance with the stator shorted /zrs/,expressed in ohms.

Zrs Impedance Angle In Deg

40.00 minimum and 55.00 maximum

Details

The angle part /o/ of the rotor impedance with the stator shorted /zrs/,expressed in degrees.

Phase Shift Angle In Deg

2.000 input to output nominal

Details

The difference between the phase time of two or more voltages or currents of the same frequency,at the same instant of time,expressed in degrees.

Maximum Fundamental Null Voltage In Millivolts Per Volt

40.00 output

Details

The maximum voltage,without harmonics,induced in the secondary circuit at the null angle rotor position,expressed in millivolts per volt.

Maximum Total Null Voltage Output In Millivolts Per Volt

75.00

Details

The maximum voltage,including harmonics,induced in the secondary circuit at the null angle rotor position,expressed in millivolts per volt.

Electrical Error Angular Range In Minutes

-6.0 to 6.0

Details

The limits of permissible deviation in angular arc error from electrical zero,expressed in minutes.

Spline Tooth Quantity

21 single shaft

Details

The number of individual teeth on the splined portion of the shaft.

Torque Gradient Per Angular Deg

0.100 inch-ounces maximum

Details

The average torque per angular degree developed between two like items,when one rotor is turned /or displaced/ at 2 degree intervals,between a 10 degree counterclockwise position and 10 degree clockwise position.

Alignment Hole Quantity

Details

The number of holes provided for aligning the item.

Pilot Length

0.0400 inches nominal

Details

A measurement of the longest dimension of a pilot,in distinction from width.

Shoulder Length

0.1320 inches nominal

Details

None.

Mounting Surface To Terminal End Distance

2.6700 inches nominal

Details

None.

Spline Tooth Diametral Pitch

120 single shaft

Details

The number of teeth the splined shaft has per inch of pitch diameter.

Shaft Thread Series Designator

unf single shaft

Details

A designation distinguishing one group of shaft thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

Shaft Thread Direction

right-hand single shaft

Details

The direction of the shaft thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

Shaft Thread Class

2a single shaft

Details

A numeric-alpha designator indicating the ptich diameter tolerance,and an external or internal shaft thread.

Body Material

steel corrosion resisting

Details

The chemical compound or mechanical mixture properties of which the body is fabricated.

Terminal Location

rear

Details

Indicates the location of the terminal/s/ on the item.

Shaft Thread Length

0.2000 inches nominal single shaft

Details

A measurement of the extent of the shaft threads measured on a line parallel to the longitudinal axis.

Shaft Type

round, slotted single shaft

Details

Indicates the type of shaft included on the item.

Alignment Hole Depth

0.1250 inches minimum

Details

None.

Transformation Ratio

1.154 rotor to stator nominal

Details

The ratio of the output voltage to the input voltage at maximum coupling.

Alignment Hole Bolt Circle Diameter

1.2500 inches nominal

Details

None.

Shaft Nominal Thread Size

0.190 inches single shaft

Details

The length of a straight line passing through the center of the shaft threaded portion,with terminated points at the circumference.

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.).

Details

The specification,standard,drawing,or similar instrument that specifies environmental and performance requirements or test conditions under which an item is tested and establishes acceptable limits within which the item must conform identified by an alphabetic and/or numeric reference number. includes the commercial and government entity (cage) code of the entity controlling the instrument.

Terminal Type And Quantity

5 screw

Details

Indicates the type and number of terminals for providing electrical connection.

Specification/Standard Data

81349-mil-s-20708/30 government specification

Details

The document designator of the specification or standard which established the item of supply.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
1.794389	D2865	3	-	5	2	-	ZG
18CDX4	10112	6	-	C	1	-	ZZ
VCDX18-4N1	10112	5	-	5	1	-	ZZ
M20708/30-01C	0U583	E	-	3	2	-	ZZ
SAE-AS20708/30	0U583	E	-	3	1	-	ZZ
AS20708/30	0VH01	E	-	5	1	-	ZZ
AS20708/30	81343	E	-	5	9	-	ZZ
18CDX4C	81349	E	-	5	9	-	TX
M20708-30-001	81349	E	-	5	9	-	TX
M20708/30-01C	81349	E	-	5	9	-	TX
MIL-S-20708/30	81349	E	-	5	9	-	TX

Material and Special Handling

Hazardous material, precious metals, criticality, and electrostatic discharge indicators.

HMIC	PMIC	ESD/EMI	Criticality
N	U	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
34760	-	W	-

RVC	WCC	TCC	SHC
-	593	Z	9

What's Included?

Certificate of Conformity
QC Inspection prior to shipping
On time delivery
Friendly service to back every order

Manufacturer

AMETEK TECHNICAL & INDUSTRIAL PRODUCTS, INC. DBA TACHTRONIC INSTRUMENTS DIVISION DIV AMETEK TECHNICAL AND INDUSTRIAL PRODUCTS, INC.

CAGE: 14404

NEW ULM , MN , 56073-1167

UNITED STATES

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FAQs

Frequently asked questions for NSN 5990-00-018-9719

What is the NIIN of the NSN 5990-00-018-9719?

The National Item Identification Number (NIIN) of the NSN 5990-00-018-9719 is 00-018-9719

When the NSN 5990-00-018-9719 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Tue, Apr 25, 1967

Does the NSN 5990-00-018-9719 contain any precious metals?

Type/content is unknown

Does the NSN 5990-00-018-9719 contain any hazardous material?

No data in HMIRS

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