3020-00-907-7499 GEAR,SPUR Index 3020-00-907-7501 GEAR,SPUR

National Stock Number:
3020-00-907-7500

Federal Supply Class:
3020

National Item Identification Number:
009077500

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:
523733-196214RAYTHEON COMPANY


Techincal Specification:
MATERIALALUMINUM ALLOY 2024 BODY
STEEL COMP 302 HUB
ALUMINUM ALLOY 2024 TEETH
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE BODY
FED STD 66 FED STD SINGLE MATERIAL RESPONSE HUB
QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE TEETH
SURFACE TREATMENTANODIZE BODY
PASSIVATE HUB
ANODIZE TEETH
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
MIL-S-8625 MIL SPEC SINGLE TREATMENT RESPONSE TEETH
TEETH QUANTITY134
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 10
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER1.1166 INCHES NOMINAL
NOMINAL OVERALL LENGTH0.375 INCHES
NOMINAL OUTSIDE DIAMETER1.132 INCHES
FACE NOMINAL WIDTH0.125 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.250 INCHES FIRST END
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.120 INCHES BOTH ENDS
HUB STYLE DESIGNATORPINNED FIRST END
HUB NOMINAL DIAMETER0.375 INCHES FIRST END
ATTACHMENT METHODMOUNTING HOLE
MOUNTING HOLE TYPE AND QUANTITY1 THREADED TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE THREAD SERIES DESIGNATORUNC TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE NOMINAL THREAD SIZE0.112 INCHES TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE THREAD QUANTITY PER INCH40 TRANSVERSELY THROUGH HUB, FIRST END
THE MANUFACTURERS DATA
MANUFACTURERS CODE96214
DESIGN CONTROL REFERENCE523733-1


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