Mini Linear Actuator 100mm Stroke (4-Inch), 4mm/s Speed, 150N Load, DC Electric Push Pull Motor for DIY Automation

This mini linear actuator is a compact electric push-pull solution designed for DIY automation and robotics applications that need controlled straight-line motion. With a 100mm (4-inch) stroke, it provides a useful travel distance for moving small doors, sliding mechanisms, panels, vents, and other light-duty mechanical parts. The actuator produces linear motion by driving an internal lead screw, turning motor rotation into a smooth extension and retraction movement.

Rated for up to 150N thrust (approximately 15kg), it’s suitable for light loads in projects such as smart cabinet drawers, small lifting platforms, adjustable mounts, robotic mechanisms, and educational engineering prototypes. The 4mm/s speed is intentionally slow, which helps in applications where accuracy, stability, and controlled positioning matter more than fast movement—especially useful when moving parts near people or delicate components.

This actuator is commonly controlled using a simple polarity reversal: swap the DC motor polarity to change direction (extend vs retract). That means you can control it with a DPDT switch, a relay module, or an H-bridge motor driver, and integrate it into Arduino/ESP32 automation with limit switch logic if required. Many actuators in this class include internal limit switches to stop at end-of-travel, but the exact feature set depends on the specific model version—always verify your unit’s behavior during testing.

Applications and project ideas

• Small hatch/door openers and closers
• Sliding panels, vents, and adjustable airflow flaps
• DIY solar tracker positioning
• Adjustable stands, mounts, and brackets
• Robotics mechanisms requiring linear movement
• Home automation prototypes (light-duty)

Specifications

• Product Type: Mini DC linear actuator (push/pull)
• Stroke Length: 100mm (4-inch)
• Speed: 4mm/s (no-load / typical rated speed)
• Rated Force: 150N (approx. 15kg equivalent force)
• Motion Type: Extend/retract linear movement via lead screw
• Control: DC polarity reversal for direction (requires suitable driver/switch)
• Mounting: Bracket/mounting points on body (style varies by model)
• Use Cases: Robotics, DIY automation, small mechanisms, educational projects
• Notes: Load capacity depends on mounting angle, duty cycle, and mechanical leverage; ensure proper alignment to avoid side loads.

This 100mm mini linear actuator is a practical choice when you want compact size, steady movement, and reliable push-pull action for DIY automation and robotics builds.

Included Components
Mini linear actuator with mounting brackets and lead wires