Servo Electric Cylinder is a high-precision electromechanical integrated linear actuator that achieves closed-loop control of linear motion through a servo motor and precision transmission system. It represents the highest level of electric cylinder technology, combining the high dynamic performance of servo systems with the reliability of mechanical transmission, and is widely used in cutting-edge fields that require nanoscale positioning or intelligent force control.
Servo Electric Cylinder is a high-performance linear actuator that integrates servo motor drive, precision transmission mechanism, and cylinder structure. Its core feature is to achieve high-precision closed-loop control of position, speed, and force through a servo system, combining the structural rigidity of an electric cylinder with the precision of servo control. Servo Electric Cylinder is the core component of high-end linear drive in industrial automation.
The structure of servo electric cylinder enhances the "servo control" capability on the basis of ordinary electric cylinder, and its main components include:
|
Component |
Technical Description |
|
Servo motor |
As the core driving component (usually an AC servo motor), it has high dynamic response, wide speed range, and precise torque output capability. It can control the rotation angle through pulse signals or bus commands. |
|
Precision transmission mechanism |
Ball screws (some high-end models use planetary roller screws) are commonly used to efficiently convert the rotational motion of servo motors into linear displacement, with a transmission efficiency of over 90% and extremely small reverse clearance (usually ≤ 0.1mm), ensuring positioning accuracy. |
|
Cylinder body and piston rod |
The high-strength metal cylinder body provides rigid support, and the piston rod is directly connected to the load, outputting linear thrust/tension. The end design has standardized interfaces (such as internal threads and pin shafts) for easy installation. |
|
Servo control system |
Includes servo drivers and feedback devices (such as encoders, grating rulers, or force sensors) to form closed-loop control: 1).The driver receives instructions from the upper computer (such as PLC, motion controller) to control the operation of the servo motor; 2).The feedback device monitors the position, velocity, or output force of the piston rod in real time and sends the signal back to the driver; 3).The driver dynamically adjusts based on the deviation between instructions and feedback to ensure that the actual motion is consistent with the instructions. |
|
Auxiliary components |
Including guide sleeve (reducing radial deviation), sealing element (dustproof and waterproof, supporting protection levels such as IP54/IP65), brake device (locking position when power is off to prevent load from falling), etc. |
Key performance characteristics of Servo Electric Cylinder
|
Ultra high precision |
The positioning accuracy can reach ± 0.01mm (depending on the screw accuracy and feedback device), and the repeated positioning accuracy is ≤± 0.005mm, far exceeding ordinary electric or hydraulic cylinders. |
|
High dynamic response |
The fast start stop capability of the servo motor enables the electric cylinder to achieve high-frequency reciprocating motion (such as several short stroke actions per second), with response times typically in milliseconds. |
|
Force control and speed controllability |
Accurate force control can be achieved through force sensor feedback (such as clamping force control in assembly, with an accuracy of ± 1% FS), and the speed can be infinitely adjusted within the range of 0.1mm/s to 1000mm/s. |
|
Rigidity and load capacity |
The cylinder structure gives it high resistance to torsion and impact, with a thrust range covering 50N to 500kN (50 tons), which can replace medium and high pressure hydraulic cylinders. |
|
Energy saving and environmental protection |
No need for hydraulic oil or compressed air, no leakage pollution, and energy consumption is only 30% -50% of the same specification hydraulic system. |
|
Intelligent integration |
Supports industrial bus protocols such as PROFINET, EtherCAT, Modbus, etc., seamlessly integrates with automation control systems, and enables remote monitoring and parameter adjustment. |
Difference from related products
Product Type Core Differences Typical Application Scenarios
Servo electric cylinder servo motor+closed-loop control, high-precision, high response precision assembly, simulation testing, high-end automation
Ordinary electric cylinder, ordinary motor (such as DC motor)+open-loop control, low precision, simple push-pull, lifting (such as door and window drive)
Hydraulic cylinder driven by hydraulic oil, with high force but low control accuracy, with leakage and heavy load scenarios (such as metallurgy and large construction machinery)
Pneumatic cylinder compressed air drive, low cost but poor rigidity, light load, low-cost scenarios (such as sorting and pushing)
|
Product Type |
Core Differences |
Typical Application Scenarios |
|
Servo electric cylinder |
servo motor+closed-loop control, high-precision, high response |
precision assembly, simulation testing, high-end automation |
|
Ordinary electric cylinder |
ordinary motor +open-loop control, low precision |
simple push-pull, lifting (such as door and window drive) |
|
Hydraulic cylinder |
driven by hydraulic oil, with high force but low control accuracy, |
with leakage and heavy load scenarios (such as metallurgy and large construction machinery) |
|
Pneumatic cylinder |
compressed air drive, low cost but poor rigidity, |
light load, low-cost scenarios (such as sorting and pushing) |
Servo electric cylinder is redefining the motion control standard of high-end equipment. Its core value lies in the perfect integration of the reliability of mechanical engineering and the progressiveness of control theory, providing a basic execution unit for the next generation of intelligent manufacturing. In the bottleneck fields of semiconductor equipment, precision medicine, etc., the research and development of independently controllable high-end servo electric cylinders has become an important component of the national strategic scientific and technological strength.
Here, we introduce series Electric Cylinder with data as follows:
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Typical application areas of Servo electric cylinder
1).Precision manufacturing and assembly:
Automotive engine bolt tightening device (controlling tightening force and displacement);
Precision assembly of 3C products (mobile phones, chips), such as screen bonding and component soldering positioning.
2).Simulation and testing equipment:
Material fatigue testing machine (controlling tension/compression frequency and force value);
Durability testing of car seats and suspensions (simulating high-frequency vibrations in road conditions).
3).High end automated production line:
Robot end effector (such as precise position control during grasping and handling);
Align and press the electrode plates of the lithium battery laminating machine (with a force control accuracy requirement of ± 5N).
4).Aerospace and Defense:
Aircraft landing gear retraction simulation device;
Fine adjustment of the angle of the missile launcher (positioning accuracy requirement ± 0.05mm).
5).Medical and scientific research:
Instrument feeding of minimally invasive surgical robots (millimeter level precise control);
Precision displacement of samples in biological experimental equipment (such as microscope stage drive).
Servo electric cylinder is a perfect combination of "precision mechanical structure" and "servo control technology", which solves the problems of low accuracy, high pollution, and difficult maintenance of traditional hydraulic/pneumatic systems. At the same time, it breaks through the performance limitations of ordinary electric cylinders and becomes a core driving component in high-end industrial automation and intelligent equipment fields. With the advancement of Industry 4.0 and intelligent manufacturing, its application in high-precision, high dynamic, and high reliability scenarios will continue to expand.
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