Model: R925-21N

Receiver Synchro

Properties:

Body Material
Steel, stainless
Body Style
Standard round c
Shoulder Diameter
Between 0.9995 inches and 1.0000 inches
Pilot Diameter
Between 0.6245 inches and 0.6250 inches
Overall Length
2.2020 inches
Flange Diameter
Between 1.0610 inches and 1.0620 inches
Flange Thickness
0.0930 inches
Undercut Diameter
0.9750 inches
Undercut Width
0.0500 inches
Shaft Diameter
0.1230 inches single shaft and 0.1240 inches single shaft
Shaft Length
0.5620 inches single shaft
Fragility Factor
Moderately rugged
Body Size
11
Rotor Input Voltage Rating In Volts
26.0
Frequency In Hertz
400.0
Rotor Input Current Rating
110.0 milliamperes
Rotor Input Electrical Power Rating
430.0 milliwatts
Zro Resistance In Ohms
42.00
Zso Resistance In Ohms
10.00
Zrs Resistance In Ohms
50.00
Rotor Dc Resistance In Ohms
20.00
Stator Dc Resistance In Ohms
8.50
Phase Shift Angle In Deg
3.800 input to output
Electrical Error Angular Range In Minutes
-30.0/+30.0
Spline Tooth Quantity
13 single shaft
Actuator Friction Torque At Minus 55 Deg Celsius
3.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
0.3 centimeter-grams
Torque Gradient Per Angular Deg
2100.0 millimeter-milligrams
Alignment Hole Quantity
4
Pilot Length
0.0620 inches
Shoulder Length
0.0620 inches
Mounting Surface To Terminal End Distance
1.6400 inches
Spline Tooth Diametral Pitch
120 single shaft
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
0.1730 inches single shaft
Plus J Zro Reactance In Ohms
270.00
Plus J Zso Reactance In Ohms
46.00
Plus J Zrs Reactance In Ohms
21.00
Shaft Type
Spline w/threads single shaft
Alignment Hole Depth
0.0500 inches
Transformation Ratio
0.454 rotor to stator
Alignment Hole Bolt Circle Diameter
0.8120 inches
Shaft Thread Size
0.125 inches single shaft
Terminal Type And Quantity
5 wire lead
NSN
5990-00-686-4902
Part Number
R925-21N
Description
Synchro,receiver
CAGE
05088

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 R925-21N NSN 5990-00-686-4902

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:
0.3000lbs
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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