Model: MIL-S-20708/94

Transmitter Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round d
Shoulder Diameter
Between 1.9850 inches and 1.9900 inches
Pilot Diameter
Between 0.5900 inches and 0.6000 inches
Second Shoulder Diameter
Between 1.9985 inches and 1.9995 inches
Second Shoulder Length
Between 0.1670 inches and 0.1700 inches
Overall Length
4.2940 inches
Flange Diameter
Between 2.2490 inches and 2.2500 inches
Flange Thickness
Between 0.2490 inches and 0.2500 inches
Body Diameter
Between 1.9900 inches and 1.9950 inches
Shaft Diameter
0.2402 inches single shaft and 0.2405 inches single shaft
Shaft Length
0.6930 inches single shaft and 0.7190 inches single shaft
Maximum Tempurature Rise
65.0 degrees celsius
Body Size
23
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
60.0
Rotor Input Current Rating
210.0 milliamperes
Rotor Input Electrical Power Rating
5.0 watts
Zro Resistance In Ohms
132.00
Zso Resistance In Ohms
98.00
Zrs Resistance In Ohms
249.00
Zso-9 Designator Resistance In Ohms
90.00
Maximum Fundamental Null Voltage In Millivolts Per Volt
75.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
125.00
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
Torque Gradient Per Angular Deg
0.130 inch-ounces
Pilot Length
Between 0.0360 inches and 0.0460 inches
Shoulder Length
Between 0.2410 inches and 0.2520 inches
Aft Of First Flange Diameter
Between 1.9985 inches and 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
494.00
Plus J Zso Reactance In Ohms
311.00
Plus J Zrs Reactance In Ohms
79.00
Shaft Type
Spline w/threads single shaft
Transformation Ratio
0.783 rotor to stator
Plus J Zso-9 Designator Reactance In Ohms
90.00
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
7 screw
Specification Data
81349-mil-s-20708/94 government specification
NSN
5990-00-553-6711
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 5990-00-553-6711

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:
1.6000lbs
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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