2810-00-439-8325 BEARING Index 5985-00-439-8327 GEAR-CLUTCH ASSEMBLY

National Stock Number:
3020-00-439-8326

Federal Supply Class:
3020

National Item Identification Number:
004398326

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:
914298318876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
BORE NOMINAL DIAMETER0.688 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH0.750 INCHES
FIRST GROOVE NOMINAL DIAMETER1.000 INCHES FIRST END
FIRST GROOVE NOMINAL DIAMETER1.490 INCHES SECOND END
FIRST GROOVE NOMINAL WIDTH0.080 INCHES SECOND END
FIRST GROOVE NOMINAL WIDTH0.125 INCHES FIRST END
HUB STYLE DESIGNATOR1 GROOVE SECOND END
HUB STYLE DESIGNATOR2 GROOVES FIRST END
HUB NOMINAL DIAMETER1.373 INCHES FIRST END
HUB NOMINAL DIAMETER1.561 INCHES SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-355,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 6 FED SPEC SINGLE MATERIAL RESPONSE HUB
MATERIALALUMINUM ALLOY 2024 BODY
MATERIALSTEEL CORROSION RESISTING HUB
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END1.438 INCHES FIRST END0.132 INCHES SECOND END
NOMINAL DISTANCE FROM END TO FIRST GROOVE0.058 INCHES SECOND END
NOMINAL DISTANCE FROM END TO FIRST GROOVE0.125 INCHES FIRST END
NOMINAL DISTANCE FROM END TO SECOND GROOVE0.297 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER2.7040 INCHES
PITCH DIAMETER2.6250 INCHES NOMINAL
PRESSURE ANGLE14.5000 DEGREES
SECOND GROOVE NOMINAL DIAMETER1.310 INCHES FIRST END
SECOND GROOVE NOMINAL WIDTH0.058 INCHES FIRST END
STYLE DESIGNATORPROTRUDING HUBS
SURFACE TREATMENTPASSIVATE HUB
TEETH QUANTITY63
TOOTH FORMSTANDARD


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