Kitronik Linear Actuator Micro Servo Kit
Description
- 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.
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.
Size
- Length: 23.2 mm
- Width: 12.5 mm
- Height: 22 mm
- Travel approx: 20 mm
- Gear Ratio: 2:3
- Movement: Horizontal and Vertical
Si vous découvrez les capacités des servos, ce produit est un bon moyen d'explorer l'une des façons dont les servos peuvent être utilisés. L'application pignon et crémaillère a été une agréable surprise à découvrir pour ce type d'appareil. Il ne fournit pas de mouvement précis mais ressemble plus à un mouvement fort. Le kit d'actionneur linéaire Kitronik m'a été très utile dans mon travail de conception.
J'ai déjà essayé des adaptateurs imprimés en 3D pour transformer des servos en actionneurs linéaires et, d'après mon expérience, ils sont encombrants, se dénudent facilement et ne sont pas fiables. Ce petit kit n'est pas parfait, mais c'est super facile à monter et ça marche bien. Je l'ai utilisé pour faire un mécanisme de clignotement facile pour un robot. Il suffit d'expérimenter un peu avec les vis pour qu'elles ne soient ni trop serrées ni trop lâches.
Not bad
Pas mal
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.
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
European consumers exercising their statutory Right of Withdrawal are subject to different conditions. See the Statutory Right of Withdrawal.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A €100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* European consumers retain their statutory Right of Withdrawal on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Withdrawal, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets, or contact us through our Support Center.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".

