FIRGELLI APPLICATION CALCULATOR
Heavy Vehicle Window Actuator Calculator
Design a powered top-hinged heavy vehicle window. Enter the window height, moving glass and frame weight, opening angles and actuator mounting points to calculate force and stroke and watch the window swing outward.
Start your calculation ↓
How the powered heavy window opens
The window pivots about its upper hinge while a linear actuator pushes between the fixed frame and a mounting point on the moving window. The side-view animation follows the opening and closing angles and shows the selected FIRGELLI actuator at the calculated mounting positions.
This calculator uses the same hinged-panel calculation and animation as the industrial vent calculator. It checks the changing leverage, actuator force and pin-to-pin length through the complete motion.
Measurements for a top-hinged window
- Measure from the upper hinge to the bottom of the window and enter the complete moving glass, frame, brackets and attached hardware weight.
- Set the closed and open angles. A closed angle of 0 degrees places the window vertically beneath its upper hinge in the default installation orientation.
- Measure the moving actuator mount from the hinge, its perpendicular offset, and the fixed mounting point's X and Y positions.
- Enter the available frame depth and check actuator and bracket clearance throughout the opening motion.
Find a matching window actuator
The example starts with a fitted Super Duty actuator. Use Fit actuator to search for a suitable mounting layout, or adjust the mounting-position sliders yourself. Selecting another actuator family automatically searches for a suitable stroke in that family, while Only use this stroke preserves the selected stroke.
Use Actuator matches and Technical specs to compare products and review force, stroke and open and closed mounting lengths. Download PDF saves the measurements, mechanism drawing and results.
Calculation assumptions
The glass and moving frame are treated as a rigid panel with their combined center of gravity halfway down the window. Force is calculated throughout the angle range using 90% mechanical efficiency. Wind, vehicle motion, seal and latch breakaway, acceleration and structural deflection are not included. Multiple actuators assume equal load sharing and synchronized movement.