3020-00-476-3001 GEAR CLUSTER Index 3020-00-476-3004 GEAR CLUSTER

National Stock Number:
3020-00-476-3003

Federal Supply Class:
3020

National Item Identification Number:
004763003

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:
68949803956NORTHROP GRUMMAN SYSTEMS CORPORATION
68949856232LOCKHEED MARTIN CORPORATION


Techincal Specification:
ATTACHMENT METHODMOUNTING HOLE
BORE NOMINAL DIAMETER12.062 INCHES BOTH ENDS
BORE STYLEW/COUNTERBORE FIRST END
CONSTRUCTIONSOLID
COUNTERBORE NOMINAL DEPTH0.125 INCHES FIRST END
COUNTERBORE NOMINAL DIAMETER12.938 INCHES FIRST END
DESIGN TYPESPUR FIRST GEAR
DESIGN TYPESPUR SECOND GEAR
FEATURES PROVIDEDMOUNTING BOLT HEAD ACCOMMODATION ADJACENT TO SECOND END
HUB NOMINAL DIAMETER12.953 INCHES BETWEEN FIRST AND SECOND GEAR
HUB NOMINAL DIAMETER13.312 INCHES FIRST END
HUB NOMINAL LENGTH0.094 INCHES BETWEEN FIRST AND SECOND GEAR
HUB NOMINAL LENGTH0.2180 INCHES FIRST END
HUB STYLE DESIGNATORPLAIN FIRST END
HUB STYLE DESIGNATORPLAIN BETWEEN FIRST AND SECOND GEAR
MATERIALALUMINUM ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER13.123 INCHES SECOND GEAR
NOMINAL OUTSIDE DIAMETER13.530 INCHES FIRST GEAR
NOMINAL OVERALL LENGTH0.812 INCHES
PRECISION CLASSIFICATIONQUALITY NUMBER 12 ALL GEARS


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