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Tachometer Generators
Part S820M431
Model #S820M431
Tachometer generator (NSN 6680-00-923-0690)
Overall Height
2.530 inches
Overall Length
6.810 inches
Overall Width
2.530 inches
Shaft Diameter
2.5310 inches single end
Flatted Portion Length
0.4680 inches single end
Shaft Rotation Direction
Clockwise single end or counterclockwise single end
Width Across Flats
0.2440 inches single end
Mounting Method
Flange
Mounting Facility Type And Quantity
4 unthreaded hole
Accuracy Range In Percent
-0.3/+0.3
Calibration Speed In Rpm
1000.0
Calibration Voltage Output Type In Volts
24.0 dc
Features Provided
Horizontal mounting position and vertical mounting position
Length Of Shaft From Housing
0.470 inches single end
Mounting Facility Circle Diameter
1.875 inches
Rotor Speed Rating In Rpm
250.0 low full load and 1500.0 high full load
Shaft End Characteristic
A15 single style single end
Terminal Type And Quantity
1 receptacle
Description
Generator,tachometer
Cage Code
14351
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S820M431
NSN 6680-00-923-0690
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Updated: 05/19/2024