Product Details | TACHOMETER GENERATOR

6680-00-811-2704 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 Alternates: KB12, 6680-00-811-2704, 00-811-2704, 6680008112704, 008112704

Instruments and Laboratory Equipment | Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments

Supply Group (FSG) NSN Assign. NIIN
66 01 JAN 1960 00-811-2704

Cross Reference | NSN 6680-00-811-2704

Part Number Cage Code Manufacturer
KB12 94271 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN

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Technical Data | NSN 6680-00-811-2704

Characteristic Specifications
OVERALL LENGTH 4.270 INCHES
OVERALL WIDTH 2.820 INCHES
LENGTH OF SHAFT FROM HOUSING 0.470 INCHES SINGLE END
MOUNTING FACILITY TYPE AND QUANTITY 4 UNTHREADED HOLE
NOMINAL CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH 1.874 INCHES
NOMINAL CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH 1.874 INCHES
CURRENT TYPE AC OUTPUT
CURRENT RATING IN AMPS 0.005 SINGLE OUTPUT
TERMINAL TYPE AND QUANTITY 2 BINDING POST
CALIBRATION VOLTAGE OUTPUT TYPE IN VOLTS 18.0 AC
CALIBRATION SPEED IN RPM 1800.0
ELECTRICAL RESISTANCE 100.0 OHMS
ACCURACY RANGE IN PERCENT -1.0 TO 0.5
ROTOR SPEED RATING IN RPM 500.0 LOW FULL LOAD AND 5000.0 HIGH FULL LOAD
SHAFT END CHARACTERISTIC A15 SINGLE STYLE SINGLE END
WIDTH ACROSS FLATS 0.2500 INCHES NOMINAL SINGLE END
SPECIAL FEATURES 8 ROTOR POLES
MANUFACTURERS CODE 94271
DESIGN CONTROL REFERENCE KB12

Restrictions/Controls & Freight Information | NSN 6680-00-811-2704

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 062120 GENERATORS/MOTORS/PARTS NOI
Less than car load rating Q 70
Less than truck load rating W Rating Variable
Water commodity Code 590 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity H Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable