A servo electric cylinder is a combination of a servo motor and a ball screw, converting the motor’s rotary motion into linear motion to achieve a precise linear transmission system. Closed-loop control of the servo motor, coupled with a ground-grade ball screw, enables highly accurate control of linear thrust, speed, and position. By interfacing the servo controller with a PLC and a touch screen, programmable human–machine interface operation and networked control can be realized.
About Servo Electric Cylinders *The servo electric cylinder is a combination of a servo motor and a ball screw, converting the motor’s rotary motion into linear motion and achieving a precise linear transmission system. Closed-loop control of the servo motor, coupled with a ground-grade ball screw, enables precise control of linear thrust, speed, and position. By connecting the servo controller to a PLC and a touch screen, programmable human–machine interface operation and networked control are realized. *Precision Control: The servo electric cylinder enables precise control of stroke position, with a repeat positioning accuracy of up to 0.02 mm. When paired with an external displacement sensor, closed-loop control achieves an accuracy of 0.005 mm, enabling high-speed, smooth, and shock-free operation. *Features of heavy-duty servo electric cylinders: trapezoidal lead-screw drive for high strength and precise repeat positioning; servo motor with constant torque output, fast response, low noise, compact mechanical structure, small footprint, easy installation, comprehensive protection functions, energy efficiency and environmental friendliness, and long service life. *Servo electric cylinders are classified into linear-type and reciprocating-type electric cylinders. The linear electric cylinder features a modular design that integrates a servo motor, servo drive, and high-precision ball screw as its core components. The servo motor is directly coupled to the ball screw, enabling the servo motor’s encoder to provide direct feedback on the cylinder’s piston rod position and displacement. This eliminates intermediate transmission inertia and backlash, thereby enhancing control accuracy. At low speeds, a planetary gearbox can be added to increase output torque, reduce motor power requirements, and lower energy consumption. The servo motor is fully integrated with the electric cylinder, making installation straightforward and operation convenient. Available models include 28L, 35L, 50L, 65L, 80L, and 95L. *In a reciprocating electric cylinder, the motor is mounted parallel to the cylinder body. The motor drives a lead screw via a high-strength synchronous belt or precision gear transmission, enabling linear motion. This compact installation configuration makes it ideal for applications with limited or constrained mounting space. The return-type servo electric cylinder models are: 28H, 35H, 50H, 65H, 80H, and 95H.
Application Examples of Servo Electric Cylinders
Applied to six-degree-of-freedom platforms, it is widely used in:
Motion simulation: precision positioning for flight, driving, road, wave, and earthquake simulation experience platforms. Space docking: micro-motion mechanisms, large-scale integrated circuit fabrication, well-cluster mining machinery, parallel kinematic machine tools, industrial assembly robots, ground-based testing of space docking technologies, large telescopes, error compensation devices, camera focusing, and more. Vibration platforms, owing to their rapid response capability, can be classified according to their degrees of freedom into three-degree-of-freedom platforms and six-degree-of-freedom platforms. Typically, they are available in both three- and six-degree-of-freedom configurations. With power output second only to hydraulic platforms, vibration platforms offer numerous advantages, including fast response, high sensitivity, precise control, simple structure, high reliability, low noise, cleanliness and hygiene, and ease of maintenance.
Servo electric cylinders used in press-fitting machines: Maximum pressure: 500 kgf Pressure tolerance range: 10–500 kgf Pressure setting unit: 0.1 kgf Total equipment power: 1.5 kW Operating voltage: Single-phase AC 220 V, 50 Hz Touch Screen: 10.4-inch color touch screen Positional repeat positioning accuracy: ±0.01 mm (under the same load) Pressure accuracy: 0.5% FS Press-fit speed: 0–30 mm/s Fast-forward speed: 0–200 mm/s Holding time: 0–99.9 s
