Factors dialog box (Legacy ANSI)

Access:

Ribbon: Design tab Power Transmission panel Worm Gear and on the Calculation tab, select Legacy ANSI from the drop-down list in the Method of Strength Calculation area. Click Factors.

OK

Confirms the selection and closes the dialog box.

Cancel

Closes the dialog box.

User Factors

When selected, you can enter values manually.

Factors of Additional Load

Overload Factor K o

Overload Factor is intended to account for an occasional load of the nominal design load F t . It can be established from experience with the particular application. Otherwise use K o = 1.

Click Factors... on the context menu to open Overload Factor dialog box where you can select the value.

Speed Factor K v

Speed factor takes into account the influence of worm gear speed.

Lewis Form Factor y

Lewis Form Factor takes into account the influence of pressure angle.

Tip: See the Engineer's Handbook for factors calculation formulas.