3020-01-348-1587 GEAR,SPUR Index 3020-01-348-1589 GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-01-348-1588

Federal Supply Class:
3020

National Item Identification Number:
013481588

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:
S9712A-Z3H090X-P00328DESIGNATRONICS INCORPORATED
Z3H090X-P100328DESIGNATRONICS INCORPORATED


Techincal Specification:
BORE NOMINAL DIAMETER0.120 INCHES FIRST END
BORE STYLEPLAIN BOTH ENDS
END NOMINAL DIAMETER0.187 INCHES FIRST END
END NOMINAL LENGTH0.180 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
FIRST STEP NOMINAL DIAMETER0.495 INCHES FIRST END
FIRST STEP NOMINAL LENGTH0.041 INCHES FIRST END
HUB STYLE DESIGNATOR1 STEP FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE FIRST GEARASTM A582 ASSN STD SINGLE MATERIAL RESPONSE HUBASTM A582 ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR
MATERIALSTEEL COMP 303 FIRST GEARSTEEL COMP 303 HUBSTEEL COMP 303 SECOND GEAR
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.221 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.958 INCHES
PITCH DIAMETER0.9375 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
SPECIAL FEATURESHUB HAS SPLIT 0.180 IN. FROM END
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FIRST GEARQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE HUBQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECOND GEAR
SURFACE TREATMENTPASSIVATE FIRST GEARPASSIVATE HUBPASSIVATE SECOND GEAR
TEETH QUANTITY90
TOOTH FORMSTANDARD


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