Shoe Drum Brake Calculator dialog box

Calculates the braking torque, forces, pressures, basic dimensions, and necessary time and revolutions for stopping. Use to design and calculate shoe drum brakes.

Note: Only constant braking torque is taken into account.

Access:

Ribbon: Design tab Power Transmission panel Drum Brake Calculator

Force
Select the input and output parameters.
f, T, D F	Calculate Input Force according to the Friction Factor, Torque, and Outside Diameter.
T, D, F f	Calculate Friction Factor according to the Torque, Outside Diameter and Input Force.
f, D, F T	Calculate Torque according to Friction Factor, Outside Diameter and Input Force.
f, T, F D	Calculate Outside Diameter according to the Friction Factor, Torque, and Input Force.
Friction Factor	Enter the value or click the arrow next to the edit field to select the coefficient in the table.
Brake Torque	Enter the value of the Brake Torque.
Input Force	Enter the value of the Input Force acting on the brake.
Outside Diameter	Enter the value of the Outside Diameter.
Schema
Displays the scheme of the selected brake.
Pressure
b, l, p F	Calculate Input Force according to Width, Length, and Break Pressure.
b, l, F p	Calculate Break Pressure according to Width, Length, and Input Force.
b, p, F l	Calculate Length according to Width, Break Pressure, and Input Force.
l, p, F b	Calculate Width according to Length, Break Pressure, and Input Force.
Number of Brakes	Enter the value of the Number of Brakes.
Width	Enter the value of the brake width.
Length by Angle	Select the option and enter the value of the Length by Angle.
Length by Arc	Select the option and enter the value of the Length by arc.
Brake Pressure (Max.)	Calculated value of the Brake Pressure. Enter the maximum allowable limit value to the second field.
Brake Pressure.Speed (max.)	Calculated value of the Brake Pressure times Speed. Enter the maximum allowable limit value to the second field.
Energy
Enter the parameters. Click the arrow in the Start Energy box to input parameters and calculate the start energy in the Start Energy dialog box.
T t	Calculate Brake Time according to Brake Torque.
t T	Calculate Brake Torque according to Brake Time.
Start Speed	Enter the value of the Start Speed of the braking element.
End Speed	Enter the value of the required End Speed.
Start Energy	Enter the value of the Start Energy or click the arrow next to the edit field to open the Start Energy dialog box where you can enter extra parameters such as Moment of Inertia, Revolutions, and so on.
Brake Time	Enter the value of the Brake Time.
Results
Displays the calculated values.
Summary of Messages area
Summary of Messages areas opens at the bottom of the tab when you double-click the double line at the bottom of tabs or if you click the chevron at the bottom of the tabs. It displays the reports about calculation.

Toolbar Commands