When your project demands a "stroke of genius," the 3020 Series Heavy-Duty Linear Servos are positioned for success. While they share the rugged mechanical DNA of our 3000 Series Heavy-Duty Linear Actuators, the 3020 Series adds brains to the brawn.
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 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.
The signal you send represents a specific location within the stroke. The extension tube will be driven to, and held at, the physical position that corresponds to the signal.
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.
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 position control linear servo, where that signal is within its range is mapped to where the linear servo should be within its stroke. If the signal is halfway through its range, the linear servo will go to halfway through its stroke.
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.
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.
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.
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.
If this particular 0.3"/sec speed, 225lb thrust, 4" stroke linear servo is not tuned for your application, check out the other options within our Heavy-Duty Position 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 the control style of a linear actuator, check out the Heavy-Duty Speed Control Linear Servos.
| Stroke | 4" |
|---|---|
| Pulse Amplitude | 3.3-5V |
| Operating Temperature | -20°C to +60°C |
| Deadband Width | 8µs |
| Motor Type | 3 Pole Ferrite |
| Gear Material | Metal Gear Train, Nylon Pinion |
| Wire Length | Servo Lead: 12.0”, Power Input: 6.0" |
| Weight | 40.2 oz |
| Wire Gauge | Servo Lead: 22awg, Power Input: 14awg |
| Voltage Range (Nominal) | 12 - 24V |
| Voltage Range (Maximum) | 11 - 30V |
| Speed (No Load) | 0.30” per second |
| Connector Type | Servo Lead: Male Servo Connector, Power Input: XT30 Connector [FH-MC] |
| Gear Ratio | 40:1 |
| Speed (Max Load) | 0.20” per second |
| Dynamic Thrust | 225 lbs |
| Static Load | 500 lbs |
| Current Drain (No-Load) | 1A |
| Current Drain (Max Load) | 4.5A |
| Potentiometer Tolerance | ± 5% |
| Feedback Density | 2.5KΩ / inch |
| IP Rating | IP53 |
| Duty Cycle | 25% (25% on, 75% off) |
| Potentiometer Linearity | ± 0.25% |
| PWM Signal (Fully Retracted) | 1900µs |
| PWM Signal (Fully Extended) | 1100µs |
| Current Drain (Idle) | 25mA |
| Previous SKU | HDLS-4-30-12V |