Model: 921-3A

Receiver Synchro

Properties:

Body Material
Steel, stainless
Body Style
Standard round b
Shoulder Diameter
Between 0.9995 inches and 1.0000 inches
Pilot Diameter
Between 0.6245 inches and 0.6250 inches
Overall Length
2.1390 inches
Flange Diameter
Between 1.0570 inches and 1.0650 inches
Flange Thickness
0.0930 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.1195 inches single shaft and 0.1200 inches single shaft
Shaft Length
0.3740 inches single shaft
Maximum Tempurature Rise
16.0 degrees celsius
Body Size
11
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
50.0 milliamperes
Rotor Input Electrical Power Rating
970.0 milliwatts
Zro Impedance Magnitude In Ohms
2598.00
Zro Impedance Angle In Deg
81.80
Zso Impedance Magnitude In Ohms
60.00
Zso Impedance Angle In Deg
78.50
Rotor Dc Resistance In Ohms
218.00
Stator Dc Resistance In Ohms
10.50
Phase Shift Angle In Deg
5.000 input to output
Maximum Total Null Voltage Output In Millivolts Per Volt
45.00
Actuator Friction Torque At Minus 55 Deg Celsius
4.00 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
1.00 centimeter-grams
Pilot Length
0.0620 inches
Shoulder Length
0.0620 inches
Mounting Surface To Terminal End Distance
Between 1.7029 inches and 1.7030 inches
Terminal Location
Rear
Shaft Slot Depth
0.0300 inches single shaft
Shaft Slot Width
0.0250 inches single shaft
Shaft Type
Round, slotted single shaft
Transformation Ratio
0.158 rotor to stator
Terminal Type And Quantity
5 wire lead
NSN
5990-00-057-1816
Part Number
921-3A
Description
Synchro,receiver
CAGE
18876

A synchro consisting of a stator and rotor inductively coupled. The rotor is free to turn in accordance with the electrical input from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, variable transformers, or items with dials.

Part 921-3A NSN 5990-00-057-1816

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02072
FIIG:
A07800
Concept No.:
1
App. Key:
F
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:
0.1000lbs
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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