Model: MIL-S-20708/94

Transmitter Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round d
Shoulder Diameter
1.9900 inches
Pilot Diameter
0.6000 inches
Second Shoulder Diameter
1.9995 inches
Second Shoulder Length
0.1720 inches
Overall Length
4.2940 inches
Flange Diameter
2.2500 inches
Flange Thickness
0.2500 inches
Body Diameter
1.9900 inches
Shaft Diameter
0.2405 inches single shaft
Shaft Length
0.6730 inches single shaft
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
45.0 degrees celsius
Body Size
23
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
264.0 milliamperes
Rotor Input Electrical Power Rating
2.5 watts
Zro Resistance In Ohms
50.10
Zso Resistance In Ohms
33.80
Zrs Resistance In Ohms
38.50
Zss Resistance In Ohms
19.30
Zso-9 Designator Resistance In Ohms
17.90
Maximum Fundamental Null Voltage In Millivolts Per Volt
75.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
100.00
Electrical Error Angular Range In Minutes
-8.0/+8.0
Spline Tooth Quantity
22 single shaft
Actuator Friction Torque At Minus 55 Deg Celsius
0.50 inch-ounces
Actuator Friction Torque At Plus 25 Deg Celsius
0.20 inch-ounces
Pilot Length
0.0460 inches
Shoulder Length
0.2500 inches
Aft Of First Flange Diameter
1.9995 inches
Mounting Surface To Terminal End Distance
3.4450 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
0.2660 inches single shaft
Plus J Zro Reactance In Ohms
544.00
Plus J Zso Reactance In Ohms
246.00
Plus J Zrs Reactance In Ohms
35.50
Shaft Type
Spline w/threads single shaft
Plus J Zss Reactance In Ohms
16.40
Transformation Ratio
0.783 rotor to stator
Plus J Zso-9 Designator Reactance In Ohms
86.90
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
6 screw
Specification Data
81349-mil-s-20708/94 government specification
NSN
5990-00-756-2555
Part Number
MIL-S-20708/94
Description
Synchro,transmitter
CAGE
81349

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.

Part MIL-S-20708/94 NSN 5990-00-756-2555

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02073
FIIG:
A07800
Concept No.:
1
App. Key:
H
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
2.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

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