Hydraulics and electric actuators solve different RV problems. Hydraulics suit some high-force systems. Electric actuators often win smaller RV jobs because they package cleanly and wire simply.
"On RVs, I tell people to start with the mechanism, not the catalog. If the load is a slide room with 2000 lbs of cabinets on it, hydraulics earn their complexity. If the load is a bed lift, a storage tray, or a hatch, electric actuators almost always win once you count the hoses, the pump, the noise, and the service access you have to design around."
What is the real mechanism?
The first job is to identify how the load moves. Is it lifting vertically, rotating around a hinge, sliding on rails, or moving through a linkage? That mechanism decides the force math.
What should you check before ordering?
Check moving load, stroke, closed length, extended length, speed, duty cycle, voltage, current, brackets, control method, and physical access for service. Do not order from force alone.
What should the first-pass inputs be?
Use the calculator only as a first-pass check. The final design still depends on geometry, hardware, wiring, and safety.
Relevant FIRGELLI products
Which products are worth looking at?
Only use product pages when the hardware actually matches the job. The explanation above should still make sense without buying anything.
Super Duty Electric Linear Actuator
Use this when the product family fits the real mechanism, load, stroke, and installation environment.
View Super Duty Electric Linear Actuator
Industrial Linear Actuator
Use this as an alternate starting point when packaging, force, feedback, or control requirements point this way.
View Industrial Linear Actuator
FCB-2 Actuator Controller
Use this when the surrounding mechanism or controls need support beyond the actuator itself.
View FCB-2 Actuator ControllerWhat components actually matter?
Hydraulics and electric actuators both move RV mechanisms, but they fail differently and fit different jobs. Hydraulics handle high force well. Electric actuators simplify wiring, control, and smaller mechanisms.
Where would you use this?
Use hydraulics for large slide-outs, leveling systems, and high-force lifts where fluid power makes sense. Use electric actuators for hatches, storage trays, bed lifts, vents, steps, adjustable furniture, and compact mechanisms that need clean control without pumps and hoses.
How would you use it in a real build?
Pick the system around load and service reality. If the mechanism needs huge force and already has hydraulic infrastructure, hydraulic may win. If it needs moderate force, position control, quieter operation, and simpler installation, electric often fits better.
What is a realistic example?
An RV storage tray needs to slide 24 inches and carries 120 lbs on low-friction slides. The actuator mostly overcomes rolling friction, not full weight. If friction is 15% of load, horizontal force starts near 18 lbs. Add slope, dirt, and 2× margin, and a 75 to 100 lb actuator may be enough. A hydraulic system would be unnecessary complexity for that job.
What usually goes wrong?
Do not compare only peak force. Compare wiring vs hoses, leak risk, noise, service access, position control, and what happens after months of vibration. Do not use an electric actuator where shock loads belong in the frame.
What should you measure before choosing parts?
Measure peak force, travel, duty cycle, available power, pump or actuator space, service access, and the consequence of a leak or electrical fault. Hydraulics and electric actuators both move loads, but the maintenance model changes completely.
How should you test it before trusting it?
Test the mechanism at the 2 worst positions: the highest load position and the tightest clearance position. Run it at least 20 full cycles before you judge it. Listen for speed changes, bracket flex, cable rub, and any point where the actuator rod stops moving in a straight line.
Then test it with the real load, not a hand pushing on the frame. A mechanism that works empty can bind once the mattress, TV, hatch, motor, or patient load gets added.
What changes when this becomes a real product?
A one-off build can tolerate adjustment. A real product cannot. Production needs slotted brackets removed or locked down, repeatable hole locations, controlled wire routing, service access, and a clear failure mode. If a user can overload the system, the control system should detect it before the hardware bends.
What rule of thumb should you remember?
Make the structure guide the load and make the actuator provide motion. When the actuator also becomes the guide, the bearing, and the stop, the design starts eating itself.
Which applications are a good fit?
Good applications include RV slide rooms, leveling systems, bed lifts, storage trays, vents, steps, and adjustable interior furniture. The common thread is controlled motion. The load should move through a known path, with brackets, guides, hinges, or structure carrying the side loads.
What details should go on the design checklist?
Before choosing hardware, write down peak force, system pressure or current, leak tolerance, pump noise, battery draw, service access, synchronization, and manual override. These numbers and conditions stop the project from turning into guesswork. They also make support conversations much faster because the important facts are already on the table.
For a prototype, you can adjust brackets and reroute wires after the first test. For a finished installation, make those decisions early. Leave access to fasteners. Leave access to wiring. Leave enough room to replace the actuator without taking the whole project apart.
What is the practical takeaway?
Hydraulics win on brute force. Electric actuators win when controlled, compact, cleaner motion matters more.
What final check should you do before ordering?
Write the project down as 5 numbers before you buy anything: load, stroke, speed, voltage, and available mounting space. Then add the real-world conditions: water, vibration, dust, heat, access, duty cycle, and what happens if the mechanism jams. This 10-minute check catches most actuator mistakes before money gets spent.
After that, check the control path. The switch, relay, controller, fuse, wire, and power supply all need to match the actuator current. A strong actuator with weak wiring is still a weak system.
