3020-00-139-4094 GEAR,ANTIBACKLASH,SPUR Index 4520-00-139-4098 ADAPTER,AIR CONDITIONING-HEATING

National Stock Number:
3020-00-139-4095

Federal Supply Class:
3020

National Item Identification Number:
001394095

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:
AB150-66CT250CD01351SOUTHERN GEAR & MACHINE INC
ACM8-6612444DESIGNATRONICS INC PERFECT GEAR AND INSTRUMENT DIV


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.250 INCHES BOTH ENDS
CLAMPING SURFACE NOMINAL LENGTH0.250 INCHES FIRST END
FACE NOMINAL WIDTH0.125 INCHES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB
HUB NOMINAL DIAMETER0.313 INCHES FIRST END
HUB STYLE DESIGNATORSPLIT FIRST END
III MATERIALALUMINUM ALLOY 2024 BODY
III MATERIALSTEEL COMP 303 HUB
PITCH DIAMETER1.3750 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 10
PRESSURE ANGLE20.0000 DEGREES
PROPRIETARY CHARACTERISTICSPACS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.313 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.4166 INCHES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENTANODIZE BODY
SURFACE TREATMENTPASSIVATE HUB
TEETH QUANTITY66
TOOTH FORMSTANDARD


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