{"product_id":"the-linear-arm-electric-linear-actuator","title":"The Linear Arm | 750N DC 12V Electric Linear Actuator","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003eMotion is expensive until you stop paying for it with hydraulics.\u003c\/strong\u003e A linear actuator turns 12 volts into 750 newtons of push or pull, at 10 millimetres per second, along a stroke you specify. There is no pump, no fluid, no compressor and no maintenance schedule beyond keeping the rod clean. It is the cheapest way to make a mechanism move on its own, and the reason automated doors, adjustable beds, roof vents and pop-up displays all use one.\u003c\/p\u003e\n\u003cp\u003eThe aluminium alloy tube carries a screw drive turned by a DC motor, and the rod extends and retracts without rotating, which means the load does not try to spin with it. Both ends of the travel contain a limit switch that cuts power at the extremes, so the motor cannot run against a mechanical stop and burn out. Remove power mid-stroke and the assembly self-locks in position, which is what makes it usable for a bed frame or a hatch that must hold where it was left.\u003c\/p\u003e\n\u003cp\u003eReversing direction is a matter of swapping polarity, so a simple DPDT switch, a relay board or a motor driver is enough to control it. Stroke lengths run from 50 to 400 millimetres, all at the same 750 newton rating, and the operating range covers minus 20 to 75 degrees Celsius. Rated power is 20 watts continuous with a 30 watt peak, and the working duty cycle is 20 percent, which is the honest number to design around.\u003c\/p\u003e\n\u003cp style=\"font-style:italic;color:#555;\"\u003eAutomation does not begin with software. It begins with one part that moves when it is told to.\u003c\/p\u003e\n\u003c\/div\u003e\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #eee;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eWhat Sets It Apart\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e750 N \/ 160 lb\u003c\/strong\u003e push and pull capacity across every stroke length\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e50 to 400 mm strokes\u003c\/strong\u003e at a consistent 10 mm per second\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eBuilt-in limit switches\u003c\/strong\u003e at both ends that cut power before the motor strains\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eSelf-locking screw drive\u003c\/strong\u003e that holds position when power is removed\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eNon-rotating rod\u003c\/strong\u003e so the load cannot spin free under movement\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eAluminium alloy tube\u003c\/strong\u003e with -20 to 75 degrees Celsius range\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003ePolarity reversal control\u003c\/strong\u003e from a switch, relay or motor driver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eLoad capacity:\u003c\/strong\u003e 750 N \/ 160 lb\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eInput voltage:\u003c\/strong\u003e 12 V DC\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSpeed:\u003c\/strong\u003e 10 mm per second\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eStroke options:\u003c\/strong\u003e 50, 100, 150, 200, 250, 300, 350, 400 mm\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminium alloy tube\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eRated power:\u003c\/strong\u003e 20 W continuous, 30 W peak\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eDuty cycle:\u003c\/strong\u003e 20 percent\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eLimit switches:\u003c\/strong\u003e Both ends, automatic cut-off\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eSelf-locking:\u003c\/strong\u003e Yes, holds position unpowered\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20 to 75 degrees Celsius\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Two-wire, polarity reversing\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eAdjustable bed frames and recliner mechanisms are the classic use, where the self-locking screw holds a position without drawing current. Greenhouse roof vents use a short stroke actuator wired to a thermostat to open when the temperature climbs. Camper van builders fit them to lift a pop-top or a storage hatch, and home automation users drive a hidden cabinet or a TV lift. Agricultural and industrial rigs use them for louvers, dampers and small gates, and makers use them in robotic arms and prop mechanisms where a pneumatic cylinder would need a compressor. Anywhere a 750 newton movement needs to happen on command, the same part applies.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I reverse the direction?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Swap the polarity of the two power wires. A DPDT switch, a two-channel relay module or an H-bridge motor driver all do this, and none of them require modifying the actuator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does a 20 percent duty cycle mean in practice?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Two minutes of running followed by eight minutes of rest, roughly. Exceeding that heats the motor and shortens its life, so size the stroke and speed around how often the mechanism actually moves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will it hold a load when the power is off?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The screw drive self-locks, so a bed frame or hatch stays where it was left without a brake or a counterweight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I choose the stroke length?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Measure the distance the mechanism must travel and add a margin for the mounting geometry. The 750 newton rating is identical across all stroke lengths, so the choice is purely about travel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it push a load as well as pull it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Both directions carry the same 750 newton rating, and the mounting holes at each end accept a clevis or pin joint so the assembly can pivot as it extends.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it need a controller or can I use a plain switch?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: A plain reversing switch is enough for manual control. Use a relay or driver board when the actuator is triggered by a sensor, a timer or a microcontroller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S01d643c6af574f018799937a4749bb8cl.webp?width=1200\" alt=\"750N DC 12V Linear Actuator Electric Motor Linear Actuator 50mm 100mm 150mm 200m\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Saefb9b521765416f9099443c037919fel.webp?width=1200\" alt=\"750N DC 12V Linear Actuator Electric Motor Linear Actuator 50mm 100mm 150mm 200m\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc1b8896d750e4bcead75a0a363cf9f8aN.webp?width=1200\" alt=\"750N DC 12V Linear Actuator Electric Motor Linear Actuator 50mm 100mm 150mm 200m\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S8d2f2729339f4b6e83837d1128cb5830z.webp?width=1200\" alt=\"750N DC 12V Linear Actuator Electric Motor Linear Actuator 50mm 100mm 150mm 200m\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S9956d8bf0f3c494286666f87124765ecZ.webp?width=1200\" alt=\"750N DC 12V Linear Actuator Electric Motor Linear Actuator 50mm 100mm 150mm 200m\" loading=\"lazy\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:4px;\"\u003e\n\u003cimg 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