Model: MILS20708-39

Control Transformer Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round, rotatable stator b
Shoulder Diameter
Between 1.5615 inches and 1.5620 inches
Pilot Diameter
0.9375 inches
Overall Length
3.7330 inches
Flange Diameter
Between 1.7490 inches and 1.7500 inches
Flange Thickness
Between 0.0900 inches and 0.0960 inches
Undercut Width
0.0780 inches
Body Diameter
1.9000 inches
Shaft Diameter
0.1870 inches single shaft and 0.1872 inches single shaft
Shaft Length
0.5450 inches single shaft and 0.5650 inches single shaft
Body Size
20
Stator Input Voltage Rating In Volts
90.0
Stator Input Current Rating
7.0 milliamperes
Stator Input Electrical Power Rating
250.0 milliwatts
Frequency In Hertz
400.0
Phase Shift Angle In Deg
3.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
35.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
65.00
Electrical Error Angular Range In Minutes
-8.0/+8.0
Spline Tooth Quantity
21 single shaft
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0006 inches
Shaft End Play
0.0030 inches
Pilot Length
Between 0.0370 inches and 0.0430 inches
Shoulder Length
Between 0.1290 inches and 0.1350 inches
Mounting Surface To Terminal End Distance
3.3300 inches
Spline Tooth Diametral Pitch
120 single shaft
Shaft Maximum Runout
0.0008 inches
Shaft Thread Series Designator
Unf single shaft
Shaft Thread Direction
Right-hand single shaft
Shaft Thread Class
2a
Terminal Location
Rear
Shaft Type
Spline w/threads single shaft
Transformation Ratio
Between 0.721 rotor to stator and 0.749 rotor to stator
Shaft Thread Size
0.1900 inches single shaft
Shaft Radial Play Determining Weight
16.0 ounces
Shaft End Play Determining Weight
16.0 ounces
Terminal Type And Quantity
5 screw
NSN
5990-00-677-6486
Part Number
MILS20708-39
Description
Synchro,control Transformer
CAGE
81349

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

Part MILS20708-39 NSN 5990-00-677-6486

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15289
FIIG:
A07800
Concept No.:
1
App. Key:
B
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
5.0 X 3.0 X 3.0
Paclk Weight:
4.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
03
LVL_A:
E
LVL_B:
F

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
RATING VARIABLE
LCL:
70.0
WCC:
590
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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