Kitronik Linear Actuator Micro Servo Kit

KitronikSKU: RB-Ktr-40
Manufacturer #: 2595

Price  :
Sale price ¥1,220

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Stock  :
In stock, 5 units

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  • Kitronik Linear Actuator Micro Servo Kit
  • Features the blue, 180-degree FS90 servo and fixings
  • Has a gear ratio of 2:3
  • Can be used with boards such as micro:bit, Arduino, or RaspberryPi
  • Provides horizontal or vertical movement
  • Creates a torque of 1.5 kg/cm at 6 V / 1.3 kg/cm at 4.8 V

The Linear Actuator Servo Kit features a great value miniature Fitec servo and converts the circular movement of the supplied servo into movement in a straight line, one way and then the other. It is ideal for robots, dioramas or train points switching. It can be mounted to a project to provide either horizontal or vertical movement.

Kitronik Linear Actuator Micro Servo Kit - Click to Enlarge

The Linear Actuator has been cut from a 5 mm clear blue Perspex Sheet, the same material as used in our servo powered Klaw gripper. There is a range of mounting holes at either end of the rack including a 3 mm hole, a 3 mm square, and standard servo horn holes suitable for wire (1 mm dia) and it has approximately 20 mm of travel. It has a gear ratio of 2:3 and the stall torque of the provided servo is 1.5 kg/cm at 6 V and 1.3 kg/cm at 4.8 V.

Kitronik Linear Actuator Micro Servo Kit - Click to Enlarge

  • 1 x Linear Actuator Laser Cut Parts
  • 1 x Micro 180 Degree Servo and fixings
  • 2 x M3x 10 Pozi PanSteel M/C
  • 1 x M3 Form A Steel Washer
  • 1 x Linear Actuator assembly Instructions


  • Length: 23.2 mm
  • Width: 12.5 mm
  • Height: 22 mm

  • Travel approx: 20 mm
  • Gear Ratio: 2:3
  • Movement: Horizontal and Vertical

Customer Reviews

Based on 3 reviews
Not bad

Not bad

Great for what it is

I've tried 3D printed adapters to make servos into linear actuators before, and, in my experience, they are cumbersome, strip easily, and unreliable. This little kit is not perfect, but it's super easy to assemble and it works well. I used it to make an easy blink mechanism for a robot. Just experiment a bit with the screws so they are not too tight and not too loose.

A Good Design, Experiment, and Educational Product

If you are learning about the capabilities of servos then this product is a good way to explore one of the ways servos can be used. The rack and pinion application was a pleasant surprise to discover for this device type. It does not provide precise motion but is more like a strong motion. The Kitronik Linear Actuator Kit was very useful to me in my design work.

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