Model: ST721-7B

Tachometer Generator

Properties:

Overall Length
2.259 inches
Overall Width
1.130 inches
Electrical Resistance
325.0 ohms
Shaft Diameter
0.1200 inches single end
Current Type
Dc input
Mounting Method
Clamp ring
Mounting Facility Type And Quantity
1 clamp collar
Accuracy Range In Percent
-1.0/+1.0
Calibration Speed In Rpm
1000.0
Calibration Voltage Output Type In Volts
7.4 dc
Features Provided
Horizontal mounting position and vertical mounting position
Length Of Shaft From Housing
0.528 inches single end
Rotor Speed Rating In Rpm
10.0 low full load and 20000.0 high full load
Current Rating In Amps
0.001 single input
Shaft End Characteristic
A1 single style single end
Terminal Type And Quantity
2 screw
NSN
6680-00-551-3823
Part Number
ST721-7B
Description
Generator,tachometer
CAGE
83555

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.

Part ST721-7B NSN 6680-00-551-3823

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
20241
FIIG:
A271A0
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:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
77.5
LCL:
--
WCC:
652
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Phone: +1 470-231-0824
Email: Contact Form »
Schedule B and Export
  • Schedule B: 9029205000
  • SITC: 87325
  • End Use: Other parts and accessories of vehicles
  • NAICS: 334514
  • USDA: 1

Freight Class: Speedometers and tachometers, not for use in civil aircraft

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