Heavy-Duty Linear Servo (Speed Control, 12-24V, 225lb Thrust, 0.3"/sec, 10" Stroke)

While they share the rugged mechanical DNA of our 3000 Series Heavy-Duty Linear Actuators, the 3021 Series Speed Control Linear Servos add brains to the brawn. They are the perfect choice for those who want the familiar control style of a linear actuator with the plug-in-play wiring of a linear servo. They are a natural match for spring-return input devices like a transmitter or a Servo Joystick. Push the stick forward to extend, pull back to retract. When the stick centers, the linear servo will hold its position

Perfect for a Plethora of Projects

Linear servos are excellent for a bevy of uses, whether you're moving a door, opening a hatch on a boat, controlling a dump bed on a UTV, or adding actuated abominability to your Halloween creation. Simply put, they’re a clean (no hydraulic oil here!), approachable way to make things move linearly, even for a beginner.

Linear Servos vs Linear Actuators

Linear actuators are simple; you can run one with a setup as minimal as touching the two power wires to a battery. However, controlling their speed or position is more complex and requires external electronics. Linear servos have built-in control circuitry to handle the heavy lifting, making precise movement a plug-and-play operation.

What Does "Speed Control" Mean?

The signal you send represents a specific speed and direction. The extension tube will be driven in the speed and direction that corresponds to the signal.

How do you Control a Linear Servo?

A Linear Servo is controlled in the same way a standard servo is. If you have an R/C receiver or any one of our Servo Controllers, just plug your linear servo in via the servo-style connector. If you are a power user programming a microcontroller, just send a standard PWM signal like you would to a normal servo.

How Do Speed Control Linear Servos Work?

On your servo controller, the rotation of your knob or sweep of your gimbal axis gets translated into a signal. That signal is somewhere between a minimum and maximum. On a speed control linear servo, where that signal is within its range is mapped between 100% speed retracting and 100% speed extending. If the signal is halfway through its range, the linear servo will stop.

Power Wiring

This linear servo features a male XT30 connector for 12V-24V power input (minimum 5A recommended). We do not recommend that the power source be part of a charging circuit, such as a vehicle with an alternator or generator supplying power to the battery while running.

BEC (Battery Eliminator Circuit)

The Linear Servo automatically feeds 5V (500mA) back through the red wire of the twisted servo lead, allowing both the linear servo and your controller to run off a single power source. If your controller is already powered by another source, we recommend that you disconnect the red wire from the twisted servo lead. Servo controllers should never be powered from multiple sources at once.

Mounting

The 8mm diameter mounting hole nearest the motor is fixed for alignment, while the same-sized mounting hole on the extension tube can be rotated to accommodate applications that require the holes to be oriented differently.

Rugged & Weather-Ready

The durable all-metal case and sealed junctures provide an IP53 rating, making this a reliable choice for inclement weather. The internal lead screw and steel gearing allow the servo to handle immense static loads without back-driving, even when power is removed.

A Multitude of Options

If this particular 0.3"/sec speed, 225lb thrust, 10" stroke linear servo is not tuned for your application, check out the other options within our Heavy-Duty Speed Control Linear Servos. If a traditional linear actuator is more your speed, check out our Heavy-Duty Linear Actuators. If you want the plug-and-play convenience of a linear servo with position control, check out the Heavy-Duty Position Control Linear Servos.