RC servos are a common component in many robotics ... The 3D Printed Mini Linear Actuator was developed as a way to turn a mini servo into a linear actuator, giving it more power in the process.

Tolomatic products include the IMA and IMA-S linear servo actuators. These actuators feature integrated Source: Tolomatic, ...

long-throw linear actuators are a little harder to come by, so it’s nice to know you can 3D-print linear gearing for standard micro RC servos and roll your own. Currently on revision 2 ...

linear servo presses integrate direct-drive linear actuators—a design that eliminates energy loss associated with mechanical transmission, allowing for more precise positioning and speed control.