3020-00-057-2180 GEAR,SPUR Index 7530-00-057-2184 PAPER,BOND

National Stock Number:
3020-00-057-2181

Federal Supply Class:
3020

National Item Identification Number:
000572181

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:
2075912-10810001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
ATTACHMENT METHODCLAMP
BORE NOMINAL DIAMETER0.187 INCHES BOTH ENDS
FACE NOMINAL WIDTH0.125 INCHES
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 416/SAE 51416 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 416 BODY
PITCH DIAMETER1.1250 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 QUANTITY108
TOOTH FORMSTANDARD


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