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Transmitter Synchro

Model / MPN: M20708/45-01 | NSN: 5990-00-070-8522
ITAR Registered seal

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the stator into a receiver synchro, a control transformer or differential synchro is dependent upon the position of its rotor. Does not include variable resistors, goniometers, variable transformers, or items with dials.

Product Details
NATO Stock Number
5990-00-070-8522
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Body Material
Steel, corrosion resisting
Body Style
Standard round d
Shoulder Diameter
Between 1.9850 inches and 1.9900 inches
Pilot Diameter
0.5950 inches
Second Shoulder Diameter
Between 1.9985 inches and 1.9995 inches
Second Shoulder Length
0.1700 inches
Overall Length
4.2990 inches
Flange Diameter
Between 2.2490 inches and 2.2500 inches
Flange Thickness
0.2500 inches
Body Diameter
1.9900 inches
Shaft Diameter
0.2403 inches single shaft and 0.2405 inches single shaft
Shaft Length
0.7190 inches single shaft
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
20.0 degrees celsius
Body Size
23
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
245.0 milliamperes
Rotor Input Electrical Power Rating
1.7 watts
Zro Impedance Magnitude In Ohms
Between 470.00 and 580.00
Zro Impedance Angle In Deg
Between 84.00 and 87.50
Zss Impedance Magnitude In Ohms
Between 21.60 and 26.00
Zss Impedance Angle In Deg
Between 42.00 and 47.00
Phase Shift Angle In Deg
1.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
32.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
48.00
Electrical Error Angular Range In Minutes
-6.0/+6.0
Electrical Error Angular Range In Minutes
-6.0 to 6.0
Spline Tooth Quantity
22 single shaft
Torque Gradient Per Angular Deg
0.200 inch-ounces
Pilot Length
0.0430 inches
Shoulder Length
0.2500 inches
Aft Of First Flange Diameter
Between 1.9985 inches and 1.9995 inches
Mounting Surface To Terminal End Distance
4.2990 inches
Spline Tooth Diametral Pitch
96 single shaft
Shaft Thread Series Designator
Unf single shaft
Shaft Thread Direction
Right-hand single shaft
Shaft Thread Class
2a single shaft
Terminal Location
Rear
Shaft Thread Length
0.2900 inches single shaft
Shaft Type
Spline w/threads single shaft
Transformation Ratio
0.783 rotor to stator
Shaft Thread Size
0.250 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", "", etc.).
Terminal Type And Quantity
5 screw
Specification Data
81349-mil-s-20708/45 government specification
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M516T1118 Synchro, Transmitter 8 EA 11/09/2015
SPE7M517Q1086 Synchro, Transmitter 18 EA 03/20/2017
SPE7M517TN638 Synchro, Transmitter 7 EA 07/10/2017
SPE7M517TT083 Synchro, Transmitter 50 EA 08/24/2017
SPE7M517TU442 Synchro, Transmitter 22 EA 09/11/2017
SPE7M519T714E Synchro, Transmitter 25 EA 08/12/2019
SPE7M519T734E Synchro, Transmitter 31 EA 08/12/2019

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M20708/45-01 Cross Reference
  • VTSN23-64-N2/23CX4D
  • S0C4010
  • WD6368ITEM15
  • 23CX4D
  • M20708/45-001
  • M20708/45-1D
  • M28787/219
  • M20708/45-01D
  • VCX23-4N3
  • S0C4010
  • AS20708/45
  • 23CX4D
  • 8212801
  • 737834-14
  • 069732130
  • 23CX4A
  • 76-00915-00
  • D10760
  • 5612397
  • 397-001-023
  • VTSN23-64-N2/23CX4D
  • 99053917
  • 23M1H1Q
  • M20708/45D-001
  • MIL-S-20708/45
  • WD6368ITEM15