Model: 421-1D904

Control Transformer Synchro
Description:

Aluminum body material, standard round b body style, 1.0000 inches shoulder diameter, 0.6250 inches pilot diameter, 2.3320 inches overall length.

Properties:

Body Material
Aluminum
Body Style
Standard round b
Shoulder Diameter
1.0000 inches
Pilot Diameter
0.6250 inches
Overall Length
2.3320 inches
Flange Diameter
1.0620 inches
Flange Thickness
0.0690 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.1872 inches single shaft
Shaft Length
0.6040 inches single shaft
Body Size
11
Stator Input Voltage Rating In Volts
11.8
Stator Input Current Rating
138.0 milliamperes
Stator Input Electrical Power Rating
290.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
600.00
Zso Resistance In Ohms
15.00
Zrs Resistance In Ohms
570.00
Rotor Dc Resistance In Ohms
340.00
Stator Dc Resistance In Ohms
8.50
Phase Shift Angle In Deg
5.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
30.00 input
Maximum Total Null Voltage Output In Millivolts Per Volt
70.00
Electrical Error Angular Range In Minutes
-3.0/+3.0
Spline Tooth Quantity
21 single shaft
Actuator Friction Torque At Minus 55 Deg Celsius
16.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
6.0 centimeter-grams
Pilot Length
0.0620 inches
Shoulder Length
0.0620 inches
Mounting Surface To Terminal End Distance
1.7130 inches
Spline Tooth Diametral Pitch
120 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
0.3020 inches single shaft
Plus J Zro Reactance In Ohms
2730.00
Plus J Zso Reactance In Ohms
72.00
Plus J Zrs Reactance In Ohms
260.00
Shaft Type
Spline w/threads single shaft
Transformation Ratio
0.585 rotor to stator
Shaft Thread Size
0.190 inches single shaft
Terminal Type And Quantity
5 wire lead
NSN
5990-00-020-9689
Part Number
421-1D904
Description
Synchro,control Transformer
CAGE
00607

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 421-1D904 NSN 5990-00-020-9689

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.9000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
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

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

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