3020-01-180-6230 GEARCLUSTER Index 3020-01-180-6232 GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-01-180-6231

Federal Supply Class:
3020

National Item Identification Number:
011806231

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:
1308403658260PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH
13084036-104939LOCKHEED MARTIN CORPORATION
MAB250-50,P2/.34501351SOUTHERN GEAR & MACHINE INC
MM1504006983ZAGORA GEAR PRODUCTS INC
13084036-158260PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH


Techincal Specification:
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
FURNISHED ITEMS AND QUANTITY1 RETAINING RING AND 1 SPRING
HUB STYLE DESIGNATORPINNED FIRST END
HUB NOMINAL DIAMETER0.375 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY 2024 FIRST GEAR
PITCH DIAMETER0.7813 INCHES NOMINAL
MATERIALSTEEL COMP 303 HUB
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.220 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.813 INCHES
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB
SURFACE TREATMENTPASSIVATE HUB
SURFACE TREATMENTANODIZE FIRST GEAR
TEETH QUANTITY50
TOOTH FORMSTANDARD


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