Model: U991-001

Control Transformer Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round, rotatable stator c
Shoulder Diameter
1.0000 inches
Pilot Diameter
0.6250 inches
Overall Length
3.6040 inches
Flange Diameter
1.1880 inches
Flange Thickness
0.0930 inches
Undercut Diameter
0.9375 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.1200 inches front shaft
Shaft Diameter
0.1200 inches rear shaft
Shaft Length
0.5860 inches front shaft
Shaft Length
0.7410 inches rear shaft
Fragility Factor
Moderately rugged
Body Size
12
Stator Input Voltage Rating In Volts
11.8
Stator Input Current Rating
86.0 milliamperes
Stator Input Electrical Power Rating
1.0 watts
Frequency In Hertz
400.0
Zro Impedance Magnitude In Ohms
126.00
Zro Impedance Angle In Deg
78.00
Zso Impedance Magnitude In Ohms
718.00
Zso Impedance Angle In Deg
75.00
Phase Shift Angle In Deg
5.200 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
19.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
28.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Plus 25 Deg Celsius
8.0 centimeter-grams
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0005 inches
Shaft End Play
Between 0.0005 inches and 0.0030 inches
Pilot Length
0.0620 inches
Shoulder Length
0.0620 inches
Mounting Surface To Terminal End Distance
2.2410 inches
Shaft Maximum Runout
0.0010 inches
Shaft Hole Diameter
0.0625 inches rear shaft
Terminal Location
Rear
Shaft Type
Round front shaft
Shaft Type
Round, hollowed rear shaft
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
5990-00-705-4349
Part Number
U991-001
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 U991-001 NSN 5990-00-705-4349

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:
EH
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:
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

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

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