Model: U904-001

Control Transformer Synchro

Properties:

Body Material
Steel, stainless
Body Style
Standard round, rotatable stator c
Shoulder Diameter
Between 0.9995 inches and 1.0000 inches
Pilot Diameter
0.6250 inches
Overall Length
Between 2.9630 inches and 3.0450 inches
Flange Diameter
Between 1.1850 inches and 1.1910 inches
Flange Thickness
Between 0.0900 inches and 0.0960 inches
Undercut Diameter
Between 1.1050 inches and 1.1130 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.0775 inches rear shaft and 0.7800 inches rear shaft
Shaft Diameter
0.1195 inches front shaft and 0.1200 inches front shaft
Shaft Length
0.2740 inches rear shaft
Shaft Length
0.3950 inches front shaft
Fragility Factor
Moderately rugged
Body Size
12
Stator Input Voltage Rating In Volts
11.8
Stator Input Current Rating
21.0 milliamperes
Stator Input Electrical Power Rating
50.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
625.00
Zso Resistance In Ohms
93.00
Zrs Resistance In Ohms
570.00
Zss Resistance In Ohms
106.00
Rotor Dc Resistance In Ohms
385.00
Stator Dc Resistance In Ohms
60.00
Phase Shift Angle In Deg
4.200 output to input
Maximum Fundamental Null Voltage In Millivolts Per Volt
34.00 input
Maximum Total Null Voltage Output In Millivolts Per Volt
53.00
Electrical Error Angular Range In Minutes
-10.0/+10.0
Actuator Friction Torque At Minus 55 Deg Celsius
120.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
30.0 centimeter-grams
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0050 inches
Shaft End Play
Between 0.0003 inches and 0.0005 inches
Pilot Length
0.0590 mils and 0.0650 centimeters
Shoulder Length
0.0590 mils and 0.0650 centimeters
Mounting Surface To Terminal End Distance
2.3110 inches
Shaft Maximum Runout
0.0010 inches
Terminal Location
Rear
Plus J Zro Reactance In Ohms
3280.00
Plus J Zso Reactance In Ohms
570.00
Plus J Zrs Reactance In Ohms
330.00
Shaft Type
Round both shafts
Plus J Zss Reactance In Ohms
68.00
Transformation Ratio
2.203 rotor to stator
Shaft Radial Play Determining Weight
4.0 ounces
Shaft End Play Determining Weight
16.0 ounces
Terminal Type And Quantity
5 wire lead
NSN
5990-00-810-1518
Part Number
U904-001
Description
Synchro,control Transformer
CAGE
88818

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 U904-001 NSN 5990-00-810-1518

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:
--
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

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