{"id":3624,"date":"2026-09-24T02:22:19","date_gmt":"2026-09-24T02:22:19","guid":{"rendered":"https:\/\/jimiactuators.com\/?p=3624"},"modified":"2026-09-24T07:12:07","modified_gmt":"2026-09-24T07:12:07","slug":"select-the-right-servo-linear-actuator","status":"publish","type":"post","link":"https:\/\/jimiactuators.com\/pt\/select-the-right-servo-linear-actuator\/","title":{"rendered":"How to Select the Right Servo Linear Actuator: A Complete Guide Based on Thrust and Speed Requirements"},"content":{"rendered":"
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How to Select the Right Servo Linear Actuator: A Complete Guide Based on Thrust and Speed Requirements<\/h1>\n
Choosing the correct linear motion solution can be overwhelming. With so many products on the market\u2014ranging from a compact mini linear actuator<\/strong> to heavy-duty industrial systems\u2014buyers often struggle to match their performance requirements with the right technology. The two most critical parameters are thrust (force)<\/strong> and speed<\/strong>. This guide will walk you through the selection logic step by step, from low-speed DC actuators to high-speed precision sliding module<\/strong> systems, so you can avoid overpaying or under-specifying your equipment.<\/div>\n

Tier 1: Low Speed, Moderate Force \u2014 DC Linear Actuators (up to ~2 mm\/s)<\/h2>\n
If your application requires a thrust of around 2000N at a speed of 2 mm\/s or below<\/strong>, a standard DC electric linear actuator<\/strong> is almost always the best choice. These actuators typically run on 12V or 24V DC power and use a brushed or brushless motor driving a trapezoidal (ACME) screw through a gearbox.<\/div>\n
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\"12V<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
A typical mini linear actuator<\/strong> in this category offers several distinct advantages. First, DC power means you can integrate them directly into battery-powered or vehicle-based systems\u2014think solar trackers, agricultural machinery, hospital beds, or recliner chairs. Second, they are compact, sealed (many carry IP65 or IP66 ratings), and require virtually no maintenance. Third, they are remarkably cost-effective; a quality 2000N unit costs a fraction of what an equivalent industrial system would.<\/div>\n
The trade-off is speed. Because the gear ratio must be high to generate 2000N of push force from a small DC motor, the output speed stays low\u2014usually between 1 and 5 mm\/s. For applications like height adjustment, window opening, or valve control, this is perfectly adequate. Just remember the golden rule: keep DC actuators at 2 mm\/s or below when pushing near their rated 2000N capacity<\/strong>, or the motor will overheat and the screw will wear prematurely.<\/div>\n
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\"6"<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n

Tier 2: Medium Speed, Higher Duty \u2014 AC Electric Linear Actuators (5 mm\/s and above)<\/h2>\n
Once your speed requirement climbs above 5 mm\/s<\/strong>, DC technology starts to hit its limits. At these speeds, the motor must spin far faster to deliver the same force, and the small DC commutators simply cannot dissipate the heat generated. This is where an AC electric linear actuator<\/strong> takes over.<\/div>\n
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\"AC<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
AC actuators use a single-phase or three-phase induction motor, which is fundamentally better suited for continuous high-speed operation. These motors tolerate sustained loads, run cooler, and integrate seamlessly with industrial power supplies. AC linear actuators commonly deliver speeds in the 5\u201320 mm\/s range with thrusts from 500N up to 10,000N or more.<\/div>\n
Typical applications include industrial door systems, conveyor tensioning, damper control, and material handling equipment. The caveat is that AC actuators are larger, heavier, and usually more expensive than their DC counterparts. They also require mains power, making them unsuitable for mobile or battery-powered equipment. When you see the term fast linear actuator<\/strong> in industrial catalogs, it most often refers to this AC-powered category.<\/div>\n

Tier 3: High Speed, High Force \u2014 Electric Cylinders (20 mm\/s and above)<\/h2>\n
If your speed requirement exceeds 20 mm\/s<\/strong>, screw-driven actuators with standard trapezoidal threads are no longer efficient. At this point, you must upgrade to an electric cylinder<\/strong> powered by a servo motor and a precision ball screw<\/strong>.<\/div>\n
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\"High<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
The ball screw is the key differentiator. Unlike trapezoidal screws, ball screws convert rotary motion to linear motion through rolling balls rather than sliding friction. This delivers three major benefits:<\/div>\n
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    Efficiency above 90%<\/strong> \u2014 meaning more of the motor’s power becomes thrust, and less becomes waste heat<\/div>\n<\/li>\n
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    Speeds of 20\u2013500 mm\/s or higher<\/strong> while still pushing thousands of newtons<\/div>\n<\/li>\n
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    Precision positioning<\/strong> \u2014 ball screws are manufactured to tight tolerances, giving repeatable positioning within \u00b10.02 mm when paired with a servo drive and encoder<\/div>\n<\/li>\n<\/ol>\n
    A servo linear actuator<\/strong> of this type is the workhorse of modern automation: pressing, clamping, dispensing, welding, testing, and robotic end-effectors all rely on them. They accept pulse or bus commands (EtherCAT, CANopen, Modbus), making them easy to integrate into PLC-controlled production lines.<\/div>\n
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    \"DMB<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n

    Tier 4: Extreme Speed with Repeatability \u2014 Sliding Modules (over 1000 mm\/s)<\/h2>\n
    For the most demanding applications\u2014speeds above 1000 mm\/s with no load constraint and strict repeatability requirements<\/strong>\u2014even ball screw electric cylinders reach their mechanical limits. Screw critical speed (the point at which the screw begins to whip) makes ultra-high-speed screw drives impractical. The solution is the sliding module<\/strong>, also known as a linear motor stage or linear module.<\/div>\n
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    \"News:<\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
    Sliding modules replace the screw entirely. Depending on the design, they use linear motors, timing belts, or magnetic drive systems riding on linear guide rails. This architecture delivers:<\/div>\n