3020-01-070-0638 GEAR,ANTIBACKLASH,SPUR Index 5955-01-070-0640 OSCILLATOR,NONCRYSTAL CONTROLLED

National Stock Number:
3020-01-070-0639

Federal Supply Class:
3020

National Item Identification Number:
010700639

Description:
GEAR,ANTIBACKLASH,SPUR

Detail:
An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.


Manufacturer Information:
90105582577RAYTHEON COMPANY
901055-4C82577RAYTHEON COMPANY
9713-19512444DESIGNATRONICS INC PERFECT GEAR AND INSTRUMENT DIV
97310032-453712WESTFIELD PRECISION PRODUCTS INC WEST COAST GEAR PRODUCTS DIV
AGA073101351SOUTHERN GEAR & MACHINE INC


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.108 INCHES
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.062 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.225 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.7698 INCHES
NOMINAL OVERALL LENGTH0.395 INCHES
PITCH DIAMETER0.7500 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPERIPHERAL FACE, HUBLESS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY72
TOOTH FORMSTANDARD


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