Model: 904971

Transmitter Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round b
Shoulder Diameter
Between 1.3115 inches and 1.3120 inches
Pilot Diameter
Between 0.8745 inches and 0.8750 inches
Overall Length
2.3320 inches
Flange Diameter
Between 1.4320 inches and 1.4370 inches
Flange Thickness
Between 0.0880 inches and 0.0980 inches
Undercut Width
Between 0.0730 inches and 0.0830 inches
Shaft Diameter
0.1867 inches single shaft and 0.1872 inches single shaft
Shaft Length
0.4900 inches single shaft and 0.5100 inches single shaft
Maximum Tempurature Rise
20.0 degrees celsius
Body Size
15
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
85.0 milliamperes
Rotor Input Electrical Power Rating
1.2 watts
Zro Impedance Magnitude In Ohms
Between 1402.00 and 1643.00
Zro Impedance Angle In Deg
Between 81.40 and 84.60
Zss Impedance Magnitude In Ohms
Between 123.00 and 138.00
Zss Impedance Angle In Deg
Between 26.50 and 31.50
Phase Shift Angle In Deg
4.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
32.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
60.00
Electrical Error Angular Range In Minutes
-6.0/+6.0
Actuator Friction Torque At Plus 25 Deg Celsius
0.05 inch-ounces
Alignment Hole Quantity
4
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0006 inches
Shaft End Play
0.0010 inches
Pilot Length
Between 0.0350 inches and 0.0450 inches
Shoulder Length
Between 0.1270 inches and 0.1370 inches
Mounting Surface To Terminal End Distance
1.7770 inches
Shaft Maximum Runout
0.0008 inches
Terminal Location
Rear
Shaft Slot Depth
0.0250 inches single shaft
Shaft Slot Width
0.0200 inches single shaft
Shaft Type
Round, slotted single shaft
Alignment Hole Depth
0.1250 inches
Transformation Ratio
0.783 rotor to stator
Alignment Hole Bolt Circle Diameter
Between 1.0970 inches and 1.1030 inches
Shaft Radial Play Determining Weight
8.0 ounces
Shaft End Play Determining Weight
16.0 ounces
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-20708/14 government specification
NSN
5990-01-305-7228
Part Number
904971
Description
Synchro,transmitter
CAGE
34228

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 904971 NSN 5990-01-305-7228

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
03
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062820
UFC:
35080
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
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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