3040-00-057-2245 SHAFT,STRAIGHT Index 3020-00-057-2248 GEAR,ANTIBACKLASH,SPUR

National Stock Number:
3020-00-057-2247

Federal Supply Class:
3020

National Item Identification Number:
000572247

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:
148605310001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
1486053-11610001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
L31003471636090LOCKHEED MARTIN LIBRASCOPE CORP


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
HUB STYLE DESIGNATORSPLIT FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 416/SAE 51416 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 416 BODY
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.230 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER1.227 INCHES
PITCH DIAMETER1.2083 INCHES NOMINAL
PRECISION CLASSIFICATIONQUALITY NUMBER 12
PRESSURE ANGLE20.0000 DEGREES
STYLE DESIGNATORPROTRUDING HUB
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO. 5.4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
TEETH QUANTITY116
TOOTH FORMSTANDARD


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