3020-00-255-6267 GEAR,SPUR Index 3020-00-255-6271 GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-00-255-6269

Federal Supply Class:
3020

National Item Identification Number:
002556269

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:
1340063-9610001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
BACKLASH DESIGNATIONGRADE C
BORE NOMINAL DIAMETER0.187 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.263 INCHES FIRST END
FACE NOMINAL WIDTH0.062 INCHES
HUB STYLE DESIGNATORSPLIT FIRST END
HUB NOMINAL DIAMETER0.374 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
PITCH DIAMETER1.0000 INCHES NOMINAL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.263 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.018 INCHES
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTANODIZE OVERALL
TEETH QUANTITY96
TOOTH FORMSTANDARD


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