Model: M20708/28-01D

Transmitter Synchro

Special Features:

Weapon system essential

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round c
Shoulder Diameter
Between 1.5615 inches and 1.5620 inches
Pilot Diameter
0.0375 inches
Overall Length
3.0600 inches
Flange Diameter
Between 1.7450 inches and 1.7500 inches
Flange Thickness
0.0930 inches
Undercut Diameter
1.6250 inches
Undercut Width
0.0780 inches
Shaft Diameter
0.1870 inches single shaft and 0.1872 inches single shaft
Shaft Length
0.5400 inches single shaft
Fragility Factor
Moderately rugged
End Application
Qgun fire control system, mk 68; ticonderoga class cg (47); forrestal class cv; los angeles class ssn (688); nimitz class cvn; kidd class ddg; sturgeon class ssn (637); virginia class cgn (41); spruance class dd (963)
Maximum Tempurature Rise
20.0 degrees celsius
Body Size
18
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
110.0 milliamperes
Rotor Input Electrical Power Rating
900.0 milliwatts
Zro Impedance Magnitude In Ohms
Between 1045.00 and 1400.00
Zro Impedance Angle In Deg
Between 84.00 and 87.50
Zss Impedance Magnitude In Ohms
Between 40.00 and 57.00
Zss Impedance Angle In Deg
Between 34.00 and 48.00
Phase Shift Angle In Deg
1.500 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
40.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
60.00
Electrical Error Angular Range In Minutes
-6.0/+6.0
Spline Tooth Quantity
21 single shaft
Torque Gradient Per Angular Deg
0.100 inch-ounces
Alignment Hole Quantity
4
Pilot Length
0.0400 inches
Shoulder Length
0.1320 inches
Mounting Surface To Terminal End Distance
2.5200 inches
Spline Tooth Diametral Pitch
121 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
0.2000 inches single shaft
Shaft Type
Spline w/threads single shaft
Alignment Hole Depth
0.1250 inches
Criticality Code Justification
Feat
Transformation Ratio
0.785 rotor to stator
Alignment Hole Bolt Circle Diameter
1.2500 inches
Shaft Thread Size
0.190 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-20708/28 government specification
NSN
5990-00-929-0500
Part Number
M20708/28-01D
Description
Synchro,transmitter
CAGE
81343

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 M20708/28-01D NSN 5990-00-929-0500

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:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
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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