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Tachometer Generator NSN 6680-00-553-8892

Item Description

A generator consisting of a series of mounted coils surrounding a rotating permanent magnet or a permanent magnet and a rotating armature. The voltage output is directly proportional to the speed of rotation of the shaft. When used with an associated indicator, transmits such data as revolutions per minute, speed of travel, and the like. May also be used in servomechanism loops as a system stabilizer. Excludes rotary inverters, rotary converters, motor generators, dynamotors, generator sets, synchros, frequency or phase changers, and engine accessory generators.

NSN 6680-00-553-8892 NSN: 6680-00-553-8892

Features and Characteristics

Overall Length
4.312 inches
Shaft Diameter
0.310 inches single end and 0.312 inches single end
Flatted Portion Length
0.431 inches single end and 0.503 inches single end
Shaft Rotation Direction
Clockwise single end or counterclockwise single end
Width Across Flats
0.243 inches single end and 0.245 inches single end
Mounting Method
Pad
Mounting Facility Type And Quantity
4 unthreaded hole
Calibration Speed In Rpm
4200.0
Calibration Voltage Output Type In Volts
21.0 ac
Features Provided
Horizontal mounting position and vertical mounting position
Length Of Shaft From Housing
0.467 inches single end
Rotor Speed Rating In Rpm
5500.0 single full load
Center To Center Distance Between Mounting Facilities Parallel To Width
1.876 inches
Center To Center Distance Between Mounting Facilities Parallel To Height
1.876 inches
Shaft End Characteristic
A15 single style single end
Test Data Document
81349-mil-g-9398 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
1 connector, plug
FSC
6680 Mechanical Motion Measuring Instruments Liquid Level Liquid And Gas Flow
NIIN
005538892
NSN
6680005538892

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS25038-4
Cage Code:
96906
Status:
A
MSDS:
Part Number:
MIL-G-9398
Cage Code:
81349
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9029205000
  • NAICS: 334514
  • SITC: 87325
  • Description: Speedometers and tachometers, not for use in civil aircraft
  • End Use (Code 30230):
    Other parts and accessories of vehicles

Q & A

Frequently asked questions for NSN 6680-00-553-8892
What are the manufacturers of nsn 6680005538892?
Does this nsn 6680005538892 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 6680005538892
A generator consisting of a series of mounted coils surrounding a rotating permanent magnet or a permanent magnet and a rotating armature. the voltage output is directly proportional to the speed of rotation of the shaft. when used with an associated indicator, transmits such data as revolutions per minute, speed of travel, and the like. may also be used in servomechanism loops as a system stabilizer. excludes rotary inverters, rotary converters, motor generators, dynamotors, generator sets, synchros, frequency or phase changers, and engine accessory generators.
Does nsn 6680005538892 contain any precious metals?
No precious metal content.
Does nsn 6680005538892 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 6680005538892?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
20241
FIIG:
A271A0
App. Key:
F
Cond. Code:
1
Status:
A

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