Model: VCT18-4D1

Control Transformer Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round c
Shoulder Diameter
Between 1.5615 inches and 1.5620 inches
Pilot Diameter
Between 0.9370 inches and 0.9375 inches
Overall Length
3.0620 inches
Flange Diameter
Between 1.7470 inches and 1.7500 inches
Flange Thickness
Between 0.0900 inches and 0.0960 inches
Undercut Diameter
Between 1.6220 inches and 1.6280 inches
Undercut Width
0.0780 inches
Shaft Diameter
0.1870 inches single shaft and 0.1872 inches single shaft
Shaft Length
0.3790 inches single shaft and 0.3870 inches single shaft
Schematic Diagram Designator
1 y-rotor, 1 stator
Fragility Factor
Moderately rugged
Body Size
18
Stator Input Voltage Rating In Volts
90.0
Stator Input Current Rating
7.0 milliamperes
Stator Input Electrical Power Rating
100.0 milliwatts
Frequency In Hertz
400.0
Zso Impedance Magnitude In Ohms
13000.00
Zso Impedance Angle In Deg
88.00
Rotor Dc Resistance In Ohms
420.00
Stator Dc Resistance In Ohms
675.00
Phase Shift Angle In Deg
3.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
30.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
45.00
Electrical Error Angular Range In Minutes
-6.0/+6.0
Spline Tooth Quantity
21 single shaft
Actuator Friction Torque At Plus 25 Deg Celsius
0.10 inch-ounces
Alignment Hole Quantity
4
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0008 inches
Shaft End Play
0.0030 inches
Pilot Length
0.0370 mils and 0.0430 centimeters
Shoulder Length
0.1290 mils and 0.1350 centimeters
Mounting Surface To Terminal End Distance
2.5230 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 single shaft
Terminal Location
Rear
Shaft Thread Length
0.3550 inches single shaft
Shaft Type
Spline w/threads single shaft
Alignment Hole Depth
0.1250 inches
Transformation Ratio
0.735 rotor to stator
Alignment Hole Bolt Circle Diameter
1.2500 inches
Shaft Thread Size
0.190 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
5990-00-078-3182
Part Number
VCT18-4D1
Description
Synchro,control Transformer
CAGE
10112

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 VCT18-4D1 NSN 5990-00-078-3182

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:
1.7000lbs
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:
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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