3020-00-563-3827 GEAR CLUSTER Index 3040-00-563-3832 GEARSHAFT,SPUR

National Stock Number:
3020-00-563-3829

Federal Supply Class:
3020

National Item Identification Number:
005633829

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:
817172618876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.750 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.750 INCHES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY BODY
MATERIALALUMINUM ALLOY TEETH
MATERIALSTEEL COMP 416 HUB
NOMINAL OVERALL LENGTH2.312 INCHES
NOMINAL OUTSIDE DIAMETER3.204 INCHES
PITCH DIAMETER3.1250 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE14.5000 DEGREES
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY75
TOOTH FORMSTANDARD


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