1420-00-765-9506 AMPLIFIER,ELECTRONIC CONTROL Index 1440-00-765-9508 ARM ASSEMBLY,AXLE,SUPPORT

National Stock Number:
3020-00-765-9507

Federal Supply Class:
3020

National Item Identification Number:
007659507

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:
906307418876U S ARMY AVIATION AND MISSILE COMMAND
A97-20101147ARCH GEAR WORKS INC


Techincal Specification:
BORE STYLEW/COUNTERBORE COUNTER BORE, SECOND END
BORE NOMINAL DIAMETER0.241 INCHES COUNTER BORE, SECOND END
COUNTERBORE NOMINAL DIAMETER0.375 INCHES COUNTER BORE, SECOND END
COUNTERBORE NOMINAL DEPTH0.047 INCHES COUNTER BORE, SECOND END
FACE NOMINAL WIDTH0.125 INCHES
HUB NOMINAL DIAMETER0.500 INCHES FIRST END
HUB NOMINAL DIAMETER0.812 INCHES SECOND END
HUB STYLE DESIGNATORPLAIN BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-335,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY 2024 BODY
MATERIALSTEEL COMP 303 HUB
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.062 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.188 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER2.249 INCHES
SPECIAL FEATURES0.406 IN.ACROSS WRENCHING FLATS ON FIRST END HUB
PITCH DIAMETER2.2187 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENTANODIZE BODY
SURFACE TREATMENTPASSIVATE HUB
TEETH QUANTITY142
TOOTH FORMSTANDARD


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