3020-00-294-7775 GEAR,HELICAL Index 3020-00-294-7777 GEAR,HELICAL

National Stock Number:
3020-00-294-7776

Federal Supply Class:
3020

National Item Identification Number:
002947776

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:
183658265STRUTHERS WELLS CORP
315841PC28480064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
MATERIALSTEEL OVERALL
HARDNESS RATING96.0 ROCKWELL C MINIMUM AND
100.0 ROCKWELL C MAXIMUM HUB
TEETH QUANTITY59
TEETH TYPESINGLE HELIX
TOOTH FORMSTANDARD
TOOTH DIRECTIONLEFT
PRESSURE ANGLE25.0000 DEGREES
HELIX ANGLE23.0000 DEGREES
STYLE DESIGNATORONE PROTRUDING HUB, ONE FLUSH HUB
PITCH DIAMETER14.7500 INCHES NOMINAL
NOMINAL OVERALL LENGTH7.000 INCHES
NOMINAL OUTSIDE DIAMETER15.2100 INCHES
FACE NOMINAL WIDTH5.000 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END2.000 INCHES FIRST END
BORE STYLEW/ KEYWAY BOTH ENDS
BORE NOMINAL DIAMETER3.751 INCHES BOTH ENDS
KEYWAY NOMINAL WIDTH0.875 INCHES BOTH ENDS
NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM2.438 INCHES BOTH ENDS
HUB STYLE DESIGNATORPLAIN BOTH ENDS
HUB NOMINAL DIAMETER6.750 INCHES FIRST END
BODY STYLEWEBBED, OFFSET, SOLID
SPECIAL FEATURES1/2 IN. 45 DEG CHAMFER AT FIRST END OF BORE


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