3020-00-780-5856 GEAR,SPUR Index 3020-00-780-5858 GEAR,DRIVE MOTION

National Stock Number:
3020-00-780-5857

Federal Supply Class:
3020

National Item Identification Number:
007805857

Description:
GEAR CLUSTER

Detail:
A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see GEARSHAFT (as modified). Excludes GEAR SUBASSEMBLY, SPEED DECREASER.


Manufacturer Information:
A02H600777272THE BOEING COMPANY
A02H6007-277272THE BOEING COMPANY
A02H6007-281205THE BOEING COMPANY
A02H6007-377272THE BOEING COMPANY


Techincal Specification:
DESIGN TYPESPUR ALL GEARS
ATTACHMENT METHODMOUNTING HOLE
BORE STYLEW/ KEYWAY FIRST END
BORE STYLEW/COUNTERBORE SECOND END
BORE NOMINAL DIAMETER0.187 INCHES FIRST END
BORE NOMINAL DIAMETER0.312 INCHES SECOND END
CONSTRUCTIONSOLID
COUNTERBORE NOMINAL DEPTH0.145 INCHES FIRST COUNTERBORE SECOND END
COUNTERBORE NOMINAL DIAMETER0.250 INCHES FIRST COUNTERBORE SECOND END
KEYWAY NOMINAL WIDTH0.062 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720, COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
HUB NOMINAL DIAMETER0.546 INCHES BETWEEN FIRST AND SECOND GEAR
HUB NOMINAL LENGTH0.192 INCHES BETWEEN FIRST AND SECOND GEAR
HUB STYLE DESIGNATORPINNED BETWEEN FIRST AND SECOND GEAR
III MATERIALSTEEL COMP 303S OVERALL
PROPRIETARY CHARACTERISTICSPACS
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM0.135 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.542 INCHES SECOND GEAR
NOMINAL OUTSIDE DIAMETER1.167 INCHES FIRST GEAR
NOMINAL OVERALL LENGTH0.562 INCHES
SPECIAL FEATURESTHREADED 2 PLACES 4-40NC-2B IN HUB, HUB ALSO GROOVED 0.070 IN. WD LOCATED 0.170 IN. FROM SECOND END, FIRST GEAR 54 TEETH, SECOND GEAR 24 TEETH


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