3020-00-943-4619 GEAR,ANTIBACKLASH,SPUR Index 3020-00-943-4621 SPROCKET WHEEL

National Stock Number:
3020-00-943-4620

Federal Supply Class:
3020

National Item Identification Number:
009434620

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:
714499-04705869RAYTHEON COMPANY
P7-4-7200141ROLLER BEARING CO OF AMERICA, INC


Techincal Specification:
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.180 INCHES
HUB STYLE DESIGNATORPINNED FIRST END
HUB STYLE DESIGNATORTHREADED SECOND END
HUB NOMINAL DIAMETER0.500 INCHES FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 303S OR STEEL COMP 303SE OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.189 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.240 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER2.312 INCHES
PITCH DIAMETER2.2500 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY72
TOOTH FORMSTANDARD


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