2995-00-109-9587 HOUSING,ENGINE MOUN Index 1560-00-109-9605 FRAME,AIRCRAFT

National Stock Number:
3020-00-109-9592

Federal Supply Class:
3020

National Item Identification Number:
001099592

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:
10353010138ASTRONAUTICS CORPORATION OF AMERICA


Techincal Specification:
ATTACHMENT METHODMOUNTING HOLE
END NOMINAL DIAMETER0.093 INCHES BOTH ENDS
END NOMINAL LENGTH0.062 INCHES FIRST END
END NOMINAL LENGTH0.063 INCHES SECOND END
FACE NOMINAL WIDTH0.151 INCHES
FIRST STEP NOMINAL DIAMETER0.125 INCHES BOTH ENDS
FIRST STEP NOMINAL LENGTH0.039 INCHES SECOND END
FIRST STEP NOMINAL LENGTH0.056 INCHES FIRST END
HUB STYLE DESIGNATOR2 STEPS FIRST END
HUB STYLE DESIGNATOR1 STEP SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720,COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
MOUNTING HOLE NOMINAL DIAMETER0.031 INCHES AXIALLY THROUGH BODY, FIRST END
MOUNTING HOLE TYPE AND QUANTITY1 PLAIN AXIALLY THROUGH BODY, FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.102 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.188 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.800 INCHES
PITCH DIAMETER0.7833 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
SECOND STEP NOMINAL DIAMETER0.187 INCHES FIRST END
SECOND STEP NOMINAL LENGTH0.040 INCHES FIRST END
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO.5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY94
TOOTH FORMSTANDARD


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