5360-00-810-6736 SPRING,HELICAL,TORSION Index 6625-00-810-6742 SHUNT,INSTRUMENT

National Stock Number:
3020-00-810-6741

Federal Supply Class:
3020

National Item Identification Number:
008106741

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:
905603918876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
BACKLASH DESIGNATIONGRADE C
BORE NOMINAL DIAMETER0.241 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
HUB NOMINAL DIAMETER0.563 INCHES FIRST END
HUB STYLE DESIGNATORPINNED FIRST END
MATERIALALUMINUM FIRST GEAR
MATERIALALUMINUM SECOND GEAR
MATERIALSTEEL CORROSION RESISTING HUB
MATERIALSTEEL CORROSION RESISTING SPRING
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.250 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.983 INCHES
PITCH DIAMETER1.9531 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
SPECIAL FEATURESHUB INCLUDES DRIVE SLOT
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
SURFACE TREATMENTANODIZE FIRST GEAR
SURFACE TREATMENTANODIZE SECOND GEAR
SURFACE TREATMENTPASSIVATE HUB
TEETH QUANTITY125
TOOTH FORMSTANDARD


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