Model: 2957-66-1

Control Transformer Synchro

Properties:

Body Material
Steel, stainless
Body Style
Standard round a
Pilot Diameter
Between 0.4995 inches and 0.5000 inches
Overall Length
Between 1.6060 inches and 1.6300 inches
Flange Diameter
Between 0.7490 inches and 0.7500 inches
Flange Thickness
0.0620 inches
Undercut Diameter
Between 0.6880 inches and 0.6910 inches
Undercut Width
0.0620 inches
Shaft Diameter
0.0895 inches single shaft and 0.0900 inches single shaft
Shaft Length
0.3680 inches single shaft and 0.3900 inches single shaft
Body Size
8
Stator Input Voltage Rating In Volts
11.8
Stator Input Current Rating
40.0 milliamperes
Stator Input Electrical Power Rating
225.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
720.00
Zso Resistance In Ohms
145.00
Rotor Dc Resistance In Ohms
400.00
Stator Dc Resistance In Ohms
122.00
Phase Shift Angle In Deg
8.500 input to output
Maximum Total Null Voltage Output In Millivolts Per Volt
30.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
9.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
3.0 centimeter-grams
Pilot Length
Between 0.0380 inches and 0.0450 inches
Mounting Surface To Terminal End Distance
1.2400 inches
Terminal Location
Rear
Plus J Zro Reactance In Ohms
3550.00
Shaft Slot Depth
0.0300 inches single shaft
Plus J Zso Reactance In Ohms
640.00
Shaft Slot Width
0.0250 inches single shaft
Shaft Type
Round, slotted single shaft
Transformation Ratio
2.203 rotor to stator
Terminal Type And Quantity
5 wire lead
NSN
5990-00-907-3912
Part Number
2957-66-1
Description
Synchro,control Transformer
CAGE
97896

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 2957-66-1 NSN 5990-00-907-3912

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:
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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