Pitch Diameter

Enter the pitch diameter

Axial Pitch

Enter the axial pitch

Pressure Angle (deg.)

Select the pressure angle in degrees

Number of Starts

Select the number of starts

Tooth Profile

Select the type of tooth profile

Face Width

Enter the width of the worm face

Draw Hub(s)

Select to include a hub and then specify the parameters

Hub Diameter

Enter the hub diameter

Hub Projection (Left/Right)

Specify the amount of projection for the hub on both the left and the right; a negative value indicates that the hub face is recessed

Draw Bore

Select to draw a bore and then specify the parameters

Bore Diameter

Enter the bore diameter

Keyway

If a keyway is present, select the square, rectangular, or custom size; otherwise, select None. The square and rectangular selections apply the ASME-recommended size based on the bore diameter.

Keyway Width/Height

For custom keyway sizes, enter the width and height values of the keyway

View (2D only)

Select the 2D view

Show Center Lines (2D only)

Select to draw the worm with center lines