3020-01-297-8420 GEAR,HELICAL Index 3020-01-297-8422 GEAR,SPUR

National Stock Number:
3020-01-297-8421

Federal Supply Class:
3020

National Item Identification Number:
012978421

Description:
GEAR,HELICAL

Detail:
A GEAR, CYLINDRICAL IN FORM, WITH TEETH ON THE OUTER SURFACE AT AN ANGLE TO THE AXIS OF THE GEAR. SEE ALSO GEAR, ANTIBACKLASH, HELICAL:


Manufacturer Information:
1089493119207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
BODY STYLEPLAIN, SOLID
BORE NOMINAL DIAMETER3.110 INCHES BOTH ENDS
BORE STYLEINVOLUTE SPLINE BOTH ENDS
FACE NOMINAL WIDTH2.500 INCHES
HELIX ANGLE30.0000 DEGREES
HUB NOMINAL DIAMETER4.000 INCHES BOTH ENDS
HUB STYLE DESIGNATORPLAIN BOTH ENDS
MATERIALSTEEL COMP 4340 OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END2.816 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER5.537 INCHES
PITCH DIAMETER5.3000 INCHES NOMINAL
PRESSURE ANGLE17.4952 DEGREES
SPLINE PITCH DIAMETER3.7500 INCHES NOMINAL BOTH ENDS
SPLINE QUANTITY45 BOTH ENDS
SPECIAL FEATURESSECOND HUB IS 1.38 IN. FROM BODY OF GEAR
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY53
TEETH TYPEDOUBLE HELIX, SOLID
TOOTH DIRECTIONRIGHT


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