3020-01-010-1656 GEAR,SPUR Index 5998-01-010-1660 CIRCUIT CARD ASSEMBLY

National Stock Number:
3020-01-010-1658

Federal Supply Class:
3020

National Item Identification Number:
010101658

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:
901019-1C82577RAYTHEON COMPANY
9713-100612444DESIGNATRONICS INC PERFECT GEAR AND INSTRUMENT DIV
AC64ZTS-60P229440W. M. BERG INC
MZ3E-60-A-P200328DESIGNATRONICS INCORPORATED


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
END NOMINAL LENGTH0.185 INCHES FIRST END
END NOMINAL DIAMETER0.187 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
FIRST STEP NOMINAL DIAMETER0.437 INCHES FIRST END
FIRST STEP NOMINAL LENGTH0.036 INCHES FIRST END
HUB STYLE DESIGNATOR1 STEP FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY 2024 BODY
MATERIALSTEEL COMP 303 HUB
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.221 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER0.968 INCHES
PITCH DIAMETER0.9375 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY
SURFACE TREATMENTANODIZE BODY
SURFACE TREATMENTPASSIVATE HUB
TEETH QUANTITY60
TOOTH FORMSTANDARD


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