3020-00-391-0928 GEAR,HELICAL Index 3020-00-391-0930 GEAR,HELICAL

National Stock Number:
3020-00-391-0929

Federal Supply Class:
3020

National Item Identification Number:
003910929

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:
330000355380HATCH & KIRK, INC.
330000372915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV


Techincal Specification:
BODY STYLEWEBBED, WITH LIGHTENING HOLES
BORE NOMINAL DIAMETER2.0000 INCHES BOTH ENDS
BORE STYLEPLAIN BOTH ENDS
FACE NOMINAL WIDTH2.000 INCHES
HARDNESS RATING10.0 ROCKWELL C MINIMUM AND 20.0 ROCKWELL C MAXIMUM OVERALL
HELIX ANGLE27.3217 DEGREES
HUB NOMINAL DIAMETER2.997 INCHES FIRST END
HUB NOMINAL DIAMETER2.997 INCHES SECOND END
HUB STYLE DESIGNATORPLAIN BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.688 INCHES BOTH ENDS
NOMINAL OUTSIDE DIAMETER11.084 INCHES
PITCH DIAMETER10.8000 INCHES NOMINAL
PRESSURE ANGLE20.0000 DEGREES
SPECIAL FEATURESTWO COUNTERWEIGHTS AND RIVETS,ONE PLUG,OIL HOLES IN HUB,FIG 6 STAMPED ON SIDE OF GEAR FACE ON CENTER LINE OF TOOTH SPACE 9 DEG 3 MIN TO RIGHT OF LOWER VERTICAL CENTER LINE,FIG 5 STAMPED ON SIDE OF GEAR FACE ON CENTER LINE OF TOOTH SPACE 75 DEG 20 MIN CW FROM FIG 6
STYLE DESIGNATORPROTRUDING HUBS
TEETH QUANTITY54
TEETH TYPESINGLE HELIX
TOOTH FORMSTANDARD
TOOTH DIRECTIONLEFT


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