Model: 121F2A

Transmitter Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round d
Shoulder Diameter
2.7000 inches
Pilot Diameter
0.3120 inches
Second Shoulder Diameter
2.7500 inches
Second Shoulder Length
0.3750 inches
Overall Length
5.2000 inches
Flange Diameter
3.1000 inches
Flange Thickness
0.2500 inches
Body Diameter
2.7000 inches
Shaft Diameter
0.2500 inches single shaft
Shaft Length
0.8100 inches single shaft
Schematic Diagram Designator
1 y-rotor, 1 stator
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
60.0 degrees celsius
Body Size
31
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
1.76 amperes
Rotor Input Electrical Power Rating
17.0 watts
Maximum Fundamental Null Voltage In Millivolts Per Volt
75.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
100.00
Electrical Error Angular Range In Minutes
-8.0/+8.0
Actuator Friction Torque At Minus 55 Deg Celsius
0.50 inch-ounces
Actuator Friction Torque At Plus 25 Deg Celsius
0.20 inch-ounces
Torque Gradient Per Angular Deg
0.670 inch-ounces
Shaft Radial Play Test Point
0.125 inches
Shaft Maximum Radial Play
0.0005 inches
Shaft End Play
0.0040 inches
Pilot Length
0.0300 inches
Shoulder Length
0.6150 inches
Aft Of First Flange Diameter
2.7500 inches
Mounting Surface To Terminal End Distance
4.4300 inches
Shaft Maximum Runout
0.0005 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
0.3000 inches single shaft
Shaft Type
Round, threaded single shaft
Transformation Ratio
0.783 stator to rotor
Shaft Thread Size
0.250 inches single shaft
Shaft Radial Play Determining Weight
16.0 ounces
Shaft End Play Determining Weight
48.0 ounces
Test Data Document
81349-mil-s-16892 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Terminal Type And Quantity
5 screw
Specification Data
81349-mil-s-16892-31tx4a government specification
NSN
5990-00-503-0386
Part Number
121F2A
Description
Synchro,transmitter
CAGE
95542

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the stator into a receiver synchro, a control transformer or differential synchro is dependent upon the position of its rotor. Does not include variable resistors, goniometers, variable transformers, or items with dials.

Part 121F2A NSN 5990-00-503-0386

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02073
FIIG:
A07800
Concept No.:
1
App. Key:
H
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:
2.7000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
03
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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