Truck Bed Cover Actuator Calculator

Plan a powered truck bed cover

The calculator models a rigid truck cover rotating about a fixed hinge immediately behind the cab. It calculates the changing pin-to-pin distance and actuator force through the complete movement, then compares the result with scaled FIRGELLI actuator models and available stroke options.

The simulator keeps the pickup-truck body, bed, hinged cover and actuator together in one scaled side view. The truck drawing provides installation context while the cover, mounting pins and fitted actuator use the same engineering geometry as the calculations.

Measurements to collect

• Measure the truck-cover length from the hinge and include the complete moving cover, frame, latches, brackets, trim and attachments in its weight.
• Enter the fully closed and fully open cover angles.
• Measure the moving actuator pin along the cover and its perpendicular offset from the underside of the cover.
• Measure the fixed mounting pin horizontally and vertically from the hinge center.
• Measure the available truck-bed depth and check clearance to the cab, bed rails, wheel housings and stored cargo.

Use pin-center to pin-center measurements. Check clearance for the actuator body, rod, brackets, wiring and nearby vehicle structure throughout the entire motion.

Automatic fitting and manual layout

In automatic fitting mode, the calculator looks for mounting positions that use an actuator as close as possible to fully retracted with the truck cover closed and fully extended with it open. In manual mode, adjust the mounting coordinates to match an existing pickup bed and review any unused-stroke or mounting-length warning.

The fitted actuator shown in the truck simulator is also the first result in Actuator Matches. The animation uses the scaled model for that exact actuator family and stroke so its product body and pin positions can be checked visually.

Before installing an actuator on a truck

Confirm the final pin-to-pin measurements with the selected mounting brackets. Verify actuator capacity, duty cycle, controller compatibility, environmental protection and power requirements on the product page. Account for seals, latches, existing gas struts, snow or cargo loads, vibration, drainage and the vehicle electrical system. The powered cover must be secured and should not be operated while the vehicle is moving.

Mount only to structurally adequate members, keep people and cargo clear of pinch and crush zones, and confirm that the installation does not interfere with the cab, tailgate, bed rails or factory safety systems.

Common questions

Does the calculator choose the actuator stroke?

Yes. It calculates the required travel from the entered truck-cover geometry and compares it with available stroke and mounting-length combinations. The Fit actuator control can adjust the mounting points to find the closest full-stroke layout.

Can two actuators lift one truck cover?

Yes, when the cover and mounting structure keep the load shared evenly. Two or more actuators require synchronized movement and feedback-capable actuator options. Controller compatibility is shown in the calculator.

Can I use the calculator for an existing tonneau cover?

Yes. Enter the actual hinge, cover and mounting-point measurements in manual mode. The simulator will show the current truck geometry and identify compatible or nearby actuator options.