4730-00-213-0109 FITTING,LUBRICATION Index 4320-00-213-0111 IMPELLER,PUMP,CENTRIFUGAL

National Stock Number:
3020-00-213-0110

Federal Supply Class:
3020

National Item Identification Number:
002130110

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:
AB250-81CT187501351SOUTHERN GEAR & MACHINE INC


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.187 INCHES BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.188 INCHES FIRST END
FACE NOMINAL WIDTH0.125 INCHES
HUB NOMINAL DIAMETER0.250 INCHES FIRST END
HUB STYLE DESIGNATORSPLIT FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY 2024 FIRST GEAR
MATERIALALUMINUM ALLOY 2024 SECOND GEAR
MATERIALSTEEL COMP 303 HUB
MATERIALSTEEL CORROSION RESISTING SPRING
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.313 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.2969 INCHES
PITCH DIAMETER1.2656 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTANODIZE FIRST GEAR
SURFACE TREATMENTANODIZE SECOND GEAR
TEETH QUANTITY81
TOOTH FORMSTANDARD


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