Linear Servo Actuators

Linear Servo Actuators


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This is a general purpose linear servo actuator (pusher style). Two sizes have been designed, for different space constraints and force outputs.

These use continuous rotation servos which helps keep the cost very low. Off the shelf actuators of this type can cost around $70 USD.

The “mini” version will fit in smaller spacers, but has a much lower force output. The “large” version has a higher force output, but is...larger in size than the “mini”.

Here is a video that shows how to assemble and run both sizes:

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Some inspiration for this design came from:

Included in the files here are a list of materials for each size, as well as affiliate links for the non 3D printed parts.

STL quantities to print:

Mini version-
Motor Bracket, Mini Version {QTY 1x}
Pinion Gear, Mini Version {QTY 1x}

Large version-
Motor Bracket, Large Version {QTY 1x}
Pinion Gear, Large Version {QTY 1x}

Pusher- (works for both types, choose only the desired length and print QTY 1x)
75mm Long [gives stroke of ~50mm]
100mm Long [gives stroke of ~75mm]
125mm Long [gives stroke of ~100mm]
150mm Long [gives stroke of ~125mm]

Materials and methods

Print Settings:

Motor Brackets-
Printed in PLA
Printed “standing up”, with the long axis of the part along z.
Support was used
Raft was used
0.2mm layer height and 75% infill

Pinion Gears-
Printed in PLA
No support needed, with proper orientation
0.2mm layer height and 75% infill



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A89d5f56484d434571f4e62f2666861c?default=blank&size=40David Menges added this to the mechanical collection ago
41bad9720a1a407a736585c6c41badb1?default=blank&size=40Ladislav Tejml added this to the Modely collection ago
D9a3d910198385033a7b74ec1c9e7f15?default=blank&size=40Radek added this to the servo collection ago
Cfa0f6e4d3b37df5aeba66f2a054f2b2?default=blank&size=40eduardoventura1981 added this to the Mecanica collection ago
Mini eclipseFaintandFuzzies added this to the Telescope collection ago
51aa381176a7d4d1864ed4368237c97a?default=blank&size=40刘枭 added this to the tool collection ago
02367c84f4c92a7dccbb90b3fd4c513a?default=blank&size=40Simon Reich added this to the Useful collection ago
19058bd73fcdd07df955f84cb1c47e37?default=blank&size=40sapimen added this to the teste collection ago
6fabbf33151ff5c4784a375b0a22e942?default=blank&size=40Svenja Gerdes added this to the tech stuff collection ago
Fc7c4ce0e3f85bd29b4b3e69d7465b18?default=blank&size=40Hrd2RchMe added this to the Electronics collection ago
Ac80d506490a3b166fc42c21cab7dda9?default=blank&size=40joma added this to the tools collection ago
C8a2a651fffa4134ed2298c43c71b0be?default=blank&size=40flitplane added this to the Dave's Tools collection ago
6b45a40e170e97caec49e0d297cfae71?default=blank&size=40Talisman added this to the Saves collection ago
61386762c2231462417975a304c6b41b?default=blank&size=40Oli35 added this to the Gears collection ago
C98cd3b11ca875236df142e3ce4bf59a?default=blank&size=40Sswede added this to the RC Mechanics collection ago
Mini potent printables icon 2017Ali published this design ago