Actuonix S20 100mm Miniature Linear Stepper Actuator
Features a rod-style actuator with 100 mm stroke
Provides a NEMA 8 stepper motor
Is ideal for mounting in tight spaces
Provides a complete, self-contained linear motion device
The Actuonix S20 100mm Miniature Linear Stepper Actuator is a rod-style actuator that is built off of our popular L12 platform. Rather than using a DC motor and gearbox, this actuator consists of a NEMA 8 stepper motor mounted directly to the actuator shaft. The S20 offers high-precision positioning in a very compact package that is ideal for mounting in tight spaces.
The S20 actuators are complete, self-contained linear motion devices. Several stroke length options allow these to fit a wide variety of applications. The brushless stepper design makes the S20 our highest precision and longest life actuator.
Actuonix Motion Devices unique line of Miniature Linear Actuators enables a new generation of motion-enabled product designs, with capabilities that have never before been combined in a device of this size. These linear stepper actuators are a superior alternative to designing your own push/pull mechanisms.
The S20 is designed to push or pull a load axially along its full stroke length. The speed of travel is determined by the step frequency, and maximum force by the current applied.
When power is removed the actuator will hold its position, unless the applied load exceeds the back drive force. Actuators should be tested in each specific application to determine their effective life under those loading conditions and environment.
1 x Actuonix S20 100mm Miniature Linear Stepper Actuator
Backdrive Force: 10 N (no power applied) 60 N (power applied)
Temperature Rise: 80 °C Max
Input Voltage: 0-3.9 VDC
Max Current (per phase): 0.640 A
Operating Temperature: -10 to +40 °C
Audible Noise: < 40 dB at 45 cm low noise settings
Ingress Protection: IP-54
Mechanical Backlash: 0.1 mm
Inductance (per phase): 1.7 mH +/- 20% at 1 khz
Resistance (per phase): 6.5 ohm +/- 10%
Maximum Duty Cycle: 100%
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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.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RobotShop'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 ¥10,000 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
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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.
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.