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Linear Motion/Screw Driven Modules/

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Linear Lead Screw Actuators are mechanical devices used to convert rotational motion into linear motion. This is typically achieved using a screw and nut mechanism.

Here’s an overview of its main components and functioning:


  1. Lead Screw (or threaded rod): This is the main component, which is essentially a screw with threads designed for high precision and loads. The lead screw is turned by a motor, usually a stepper motor or servo motor.

  2. Nut: This component rides along the lead screw. It has internal threads that match the threads of the lead screw. As the screw rotates, the nut moves linearly along the screw.

  3. Motor: The motor provides the rotational force necessary to turn the lead screw, which in turn moves the nut. Various types of motors can be used, but stepper motors are common due to their precision.

  4. Housing: The housing holds the entire assembly and provides support and alignment for the lead screw and nut.

  5. Guide Rails (optional): For applications requiring high precision or where off-axis motion can be problematic, guide rails may be used to maintain alignment.

Working Principle

  • Rotation to Linear Motion: When the lead screw rotates, the nut translates along the length of the screw due to the threads’ interaction. This mechanism can precisely control the position of the nut.
  • Controlled by Motor: The speed and direction of the linear movement are controlled by the motor, which is often driven by a controller capable of very fine motion control.


  1. Precision: Lead screw actuators can provide very precise linear motion, making them suitable for applications requiring fine positional control.
  2. High Load Capacity: They can handle substantial loads, especially with the use of appropriate materials and thread designs.
  3. Self-locking: Some lead screw designs can be self-locking, meaning the nut won’t move unless the screw is actively being turned. This is useful for holding positions without continuous power.
  4. Customization: Lead screw systems can be tailored to specific applications by varying the screw pitch, nut material, and motor type.


  • Robotics: Precise control of arm and leg movement.
  • Automated Machinery: For positioning and handling systems.
  • Medical Devices: In devices such as infusion pumps.
  • Material Handling: For conveyor systems and automated storage.
  • Aerospace: In adjustment systems for control surfaces.

Linear lead screw actuators are invaluable in environments where precise, repeatable motion control is necessary. Their adaptability and precision make them suitable for a myriad of applications across different industries.

Today, here we introduce one of our Linear Lead Screw Actuators for general environment as follows: 

High Precision Ball Screw Linear Actuators High Precision Ball Screw Linear Actuators










You are welcome to watch more projects or visit our website to check other series or load down e-catalogues for further technical data. 

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