Receiver Synchro
R925-21N
(NSN) National Stock Number
5990-00-686-4902
Federal Supply Classification
5990 Synchros and Resolvers
Item Name Code
02072
Schedule B Code
9014900000
Summary
Standard round c body style, 0.9995 inches minimum and 1.0000 inches maximum shoulder diameter, 0.6245 inches minimum and 0.6250 inches maximum pilot diameter, 2.2020 inches nominal overall length, 1.0610 inches minimum and 1.0620 inches maximum flange diameter, 0.0930 inches nominal flange thickness
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 5 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
A synchro consisting of a stator and rotor inductively coupled. The rotor is free to turn in accordance with the electrical input from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, variable transformers, or items with dials.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 02072 | 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
0.9995 inches minimum and 1.0000 inches maximum
Details
The length of a straight line which passes through the center of a shoulder,and terminates at the circumference.Pilot Diameter
0.6245 inches minimum and 0.6250 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
2.2020 inches nominal
Details
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.Flange Diameter
1.0610 inches minimum and 1.0620 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
0.9750 inches nominal
Details
None.Undercut Width
0.0500 inches nominal
Details
None.Shaft Diameter
0.1230 inches minimum and 0.1240 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
0.5620 inches nominal single shaft
Details
A measurement of the longest dimension of the shaft,in distinction from width.Fragility Factor
moderately rugged
Details
The measure of sensitivity of the item to be packaged. a factor used by packaging engineers in devising proper cushioning in a package.Body Size
11
Details
An alpha and/or numeric designation indicating the size by which the body is identified.Rotor Input Voltage Rating In Volts
26.0 nominal
Details
The value of the primary excitation voltage for which the rotor is rated,expressed in volts.Frequency In Hertz
400.0 nominal
Details
The cycles per second /hertz/ of the alternating current.Rotor Input Current Rating
110.0 milliamperes maximum
Details
The value of the primary excitation current for which the rotor is rated,with stator /secondary/ circuit open.Rotor Input Electrical Power Rating
430.0 milliwatts maximum
Details
The value of the primary /electrical/ excitation power for which the rotor is rated.Zro Resistance In Ohms
42.00 nominal
Details
The resistance /r/ part of the rotor impedance with the stator open /zro/,expressed in ohms.Zso Resistance In Ohms
10.00 nominal
Details
The resistance /r/ part of the stator impedance with the rotor open /zso/,expressed in ohms.Zrs Resistance In Ohms
50.00 nominal
Details
The resistance /r/ part of the rotor impedance with the stator shorted /zrs/,expressed in ohms.Rotor Dc Resistance In Ohms
20.00 nominal
Details
The opposition that the rotor offers to the flow of the direct current,expressed in ohms.Stator Dc Resistance In Ohms
8.50 nominal
Details
The opposition that the stator offers to the flow of direct current,expressed in ohms.Phase Shift Angle In Deg
3.800 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.Electrical Error Angular Range In Minutes
-30.0 to 30.0
Details
The limits of permissible deviation in angular arc error from electrical zero,expressed in minutes.Spline Tooth Quantity
13 single shaft
Details
The number of individual teeth on the splined portion of the shaft.Actuator Friction Torque At Minus 55 Deg Celsius
3.0 centimeter-grams maximum
Details
The amount of rotary force that must be applied to the actuator to cause rotation,at minus 55 degrees celsius.Actuator Friction Torque At Plus 25 Deg Celsius
0.3 centimeter-grams maximum
Details
The amount of rotary force that must be applied to the actuator to cause rotation,at plus 25 degrees celsius.Torque Gradient Per Angular Deg
2100.0 millimeter-milligrams minimum
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
4
Details
The number of holes provided for aligning the item.Pilot Length
0.0620 inches nominal
Details
A measurement of the longest dimension of a pilot,in distinction from width.Shoulder Length
0.0620 inches nominal
Details
None.Mounting Surface To Terminal End Distance
1.6400 inches maximum
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
0.1730 inches nominal single shaft
Details
A measurement of the extent of the shaft threads measured on a line parallel to the longitudinal axis.Plus J Zro Reactance In Ohms
270.00 nominal
Details
The reactance (x) part of the rotor impedance with the stator open (zro).Plus J Zso Reactance In Ohms
46.00 nominal
Details
The reactance (x) part of the stator impedance with the rotor open (zso),expressed in ohms.Plus J Zrs Reactance In Ohms
21.00 nominal
Details
The reactance /x/ part of the rotor impedance with the stator shorted /zrs/,expressed in ohms.Shaft Type
spline w/threads single shaft
Details
Indicates the type of shaft included on the item.Alignment Hole Depth
0.0500 inches maximum
Details
None.Transformation Ratio
0.454 rotor to stator nominal
Details
The ratio of the output voltage to the input voltage at maximum coupling.Alignment Hole Bolt Circle Diameter
0.8120 inches nominal
Details
None.Shaft Nominal Thread Size
0.125 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.Terminal Type And Quantity
5 wire lead
Details
Indicates the type and number of terminals for providing electrical connection.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 229-0176-00 | 13499 | A | - | 7 | 2 | - | TX |
| TRH11JS2 | 83267 | 5 | - | 5 | 9 | - | TX |
| TRH-11-JS-2 | 4H618 | 5 | - | 5 | 2 | - | ZZ |
| R925-21N | 88818 | X | - | 5 | 9 | - | XX |
| TRC11JS2 | 99932 | 5 | - | 5 | 9 | - | XX |
| TRH11JS2 | 99932 | 5 | - | 5 | 2 | - | 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 |
|---|---|---|---|
| 34580 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 657 | Z | 9 |
What's Included?
- Certificate of Conformity
- QC Inspection prior to shipping
- On time delivery
- Friendly service to back every order
Manufacturer
KEARFOTT CORP DIV A SUBSIDIARY OF ASTRONAUTICS CORPORATION OF AMERICA
CAGE: 05088
BLACK MOUNTAIN
, NC
, 28711-9111
UNITED STATES
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FAQs
Frequently asked questions for NSN 5990-00-686-4902
What is the NIIN of the NSN 5990-00-686-4902?
The National Item Identification Number (NIIN) of the NSN 5990-00-686-4902 is 00-686-4902
When the NSN 5990-00-686-4902 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 5990-00-686-4902 contain any precious metals?
Type/content is unknown
Does the NSN 5990-00-686-4902 contain any hazardous material?
No data in HMIRS
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