3020-01-192-3688 GEAR,SPUR Index 4810-01-192-3690 ACTUATOR,ELECTRO-MECHANICAL,LINE

National Stock Number:
3020-01-192-3689

Federal Supply Class:
3020

National Item Identification Number:
011923689

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:
A02H602177272THE BOEING COMPANY
A02H6021-177272THE BOEING COMPANY


Techincal Specification:
END NOMINAL DIAMETER0.034 INCHES FIRST END
END NOMINAL DIAMETER0.034 INCHES SECOND END
END NOMINAL LENGTH0.100 INCHES FIRST END
END NOMINAL LENGTH0.100 INCHES SECOND END
FACE NOMINAL WIDTH0.142 INCHES
FIRST STEP NOMINAL DIAMETER0.093 INCHES FIRST END
FIRST STEP NOMINAL DIAMETER0.093 INCHES SECOND END
FIRST STEP NOMINAL LENGTH0.050 INCHES SECOND END
FIRST STEP NOMINAL LENGTH0.140 INCHES FIRST END
HARDNESS RATING26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HUB STYLE DESIGNATOR2 STEPS BOTH ENDS
III MATERIALSTEEL COMP 416 OVERALL
PITCH DIAMETER0.6460 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 9
PRESSURE ANGLE20.0000 DEGREES
PROPRIETARY CHARACTERISTICSPACS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.244 INCHES SECOND END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.334 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.667 INCHES
SECOND STEP NOMINAL DIAMETER0.187 INCHES FIRST END
SECOND STEP NOMINAL DIAMETER0.187 INCHES SECOND END
SECOND STEP NOMINAL LENGTH0.094 INCHES FIRST END
SECOND STEP NOMINAL LENGTH0.094 INCHES SECOND END
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY62
TOOTH FORMSTANDARD


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