3020-00-018-6577 GEAR,SPUR Index 3805-00-018-6580 PISTON,EXCAVATOR

National Stock Number:
3020-00-018-6579

Federal Supply Class:
3020

National Item Identification Number:
000186579

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:
1486018-10810001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
HUB NOMINAL DIAMETER0.186 INCHES FIRST END
MATERIALALUMINUM ALLOY 2024 OVERALL
NOMINAL OVERALL LENGTH0.345 INCHES
PITCH DIAMETER1.1250 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
TEETH QUANTITY108
TOOTH FORMSTANDARD


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