3020-01-031-3870 GEAR,SPUR Index 6105-01-031-3874 MOTOR,ALTERNATING CURRENT

National Stock Number:
3020-01-031-3872

Federal Supply Class:
3020

National Item Identification Number:
010313872

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:
90104882577RAYTHEON COMPANY
901048-1C82577RAYTHEON COMPANY
98430010W53712WESTFIELD PRECISION PRODUCTS INC WEST COAST GEAR PRODUCTS DIV
K901048-1C22371KOSMO GEARS


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.140 INCHES FIRST END
FACE NOMINAL WIDTH0.104 INCHES
HUB NOMINAL DIAMETER0.312 INCHES FIRST END
HUB STYLE DESIGNATORSPLIT FIRST END
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.283 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER3.0000 INCHES
PITCH DIAMETER2.9688 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY190
TOOTH FORMSTANDARD


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