3020-00-019-0173 GEAR,ANTIBACKLASH,SPUR Index 5945-00-019-0176 RELAY ASSEMBLY

National Stock Number:
3020-00-019-0174

Federal Supply Class:
3020

National Item Identification Number:
000190174

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:
10128780-218876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
ATTACHMENT METHODMOUNTING HOLE
BORE NOMINAL DIAMETER0.120 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
HUB NOMINAL DIAMETER0.375 INCHES FIRST END
HUB STYLE DESIGNATORPINNED FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720,COMP 303 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
MOUNTING HOLE THREAD SERIES DESIGNATORUNC TRANSVERSELY THROUGH HUB, FIRST END
MOUNTING HOLE TYPE AND QUANTITY2 THREADED 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
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.250 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.374 INCHES
NOMINAL OVERALL LENGTH0.375 INCHES
PITCH DIAMETER1.3541 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY130
TOOTH FORMSTANDARD


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