Actuators with Battery-less Absolute Encoders

SMC’s line of electric actuators featuring battery-less absolute encoders is designed to provide the benefits of an absolute encoder without the maintenance and environmental drawbacks of traditional batteries. This product line includes high-performance electric actuators (sliders, rods, grippers, and rotary tables) equipped with a proprietary electro-mechanical sensor. Unlike incremental encoders, which require a homing routine every time the machine is restarted, these units know exactly where they are the moment they power up, minimizing downtime. Because they contain no lithium or hazardous chemicals, they can be shipped internationally and simpler to dispose of at the end of their life cycle. They are sought by industries where precise position is required and strict quality controls must be met.

LEFB Belt Drive Slider

The LEFB Belt Drive Slider with a battery-less absolute encoder is designed for long stroke applications where position data must be retained without battery maintenance. By using a belt drive instead of a ball screw, it achieves higher travel speeds and longer reach, making it suitable for material handling and pick and place tasks.

LEFS Ball Screw Slider, High Performance with

The high-performance LEFS-G model is an upgraded version of the standard ball screw slider, featuring a more powerful motor that improves maximum work load, acceleration, and speed. These enhancements allow for significantly reduced cycle times, with the ability to handle horizontal loads up to 75 kg. It is specifically paired with high-performance controllers to maximize its output while maintaining the same physical footprint as the standard LEFS series.

LEFS Slider, Ball Screw Drive

This variation of the LEFS slider incorporates a battery-less absolute encoder, which uses a mechanical gear based system to detect position. It's ideal for applications where homing at every startup is impractical and supports various fieldbus protocols like EtherNet/IP and IO Link.

LEFSW Slider

The LEFSW is a ruggedized slider designed for harsh environments, offering IP65 equivalent protection against dust and water jets. It features a unique design where the loading table is mounted underneath the body to prevent liquid ingress, complemented by corrosion resistant internal parts and a purge port to create a moisture barrier. Equipped with a battery-less absolute encoder, it provides reliable, high precision positioning even in wash down or high contamination industrial settings.

LEG, High Rigidity Guide Rod

The LEG is a heavy-duty guided actuator that features larger guide rods and bushings than the LEYG, providing even higher rigidity for demanding industrial tasks. Designed as an electric equivalent to the MGP pneumatic series, it is built to handle significant offset loads and high-impact forces. Its robust extruded body and reinforced guiding system make it the preferred choice for heavy-part handling and high-stress assembly operations.

LEHF Gripper, Battery-less Absolute Encoder

The LEHF series is an electric gripper with a battery-less absolute encoder, designed for secure and repeatable part handling. It provides precise control over gripping force, speed, and jaw position, allowing it to handle fragile items or various part sizes with the same hardware. Because it uses an absolute encoder, the gripper remembers its jaw position even after power loss, ensuring that it can safely resume operations without dropping or crushing a held part.

LEKFS*E High Rigidity Slider, Ball Screw Drive

The LEKFS E series is a high rigidity slider that uses a reinforced guide rail to handle higher moment loads and provide greater stability during operation. This model includes a battery-less absolute encoder for maintenance-free position tracking and is engineered for applications requiring high precision under heavy or overhanging loads. Its robust mechanical construction minimizes deflection, ensuring consistent performance over long stroke lengths.

LEKFS*G High Rigidity Slider, Ball Screw Drive

The LEKFS G combines high rigidity mechanical design with the high performance motor characteristics of the F series. It's engineered for applications that demand both the ability to withstand large moments and the need for rapid cycle times with high acceleration. It's tuned for superior speed and load capacity, making it the top tier option for demanding ball screw slider applications.

LER Rotary Table, Battery-less Absolute Encoder

The LER series is an electric rotary table designed for precise angular positioning and high-torque rotation. It features a rotating top plate that can be programmed for various angles, offering a cleaner and more controllable alternative to pneumatic rotary actuators. It is available in both basic and high-torque variations to accommodate different rotational loads and speeds.

LES Slide Table, Compact

This iteration of the LES Series incorporates a battery-less absolute encoder, which significantly improves operational efficiency by eliminating the need for homing cycles. This technology also removes the environmental waste and maintenance labor associated with replacing backup batteries. It is particularly effective for high-dynamic applications, as it supports accelerations up to 10,000 mm/s² while ensuring the system remains maintenance-free over long periods.

LESH Slide Table

The LESH model builds upon the slide table design by adding a high-rigidity guide, allowing it to support larger moments and heavier loads than the standard LES. The enhanced guide structure ensures that the table remains stable and accurate even when carrying overhanging or off-center workpieces. It is ideal for precision assembly tasks that require a robust yet compact linear motion solution.

LESYH*G, High Precision Slide Table

This model combines the high-precision mechanical structure of the LESYH with a high-performance motor to deliver both extreme accuracy and increased speed. By utilizing the G series motor and controller, it reduces cycle times for high-precision tasks, making it one of the most capable slide tables in our catalog. It is the top-tier choice for high-speed, high-accuracy production lines.

LESYH, Electric Slide Table

The LESYH is a high-precision version of the electric slide table, featuring a specialized guide and screw system to achieve superior positioning accuracy and smoothness. It is designed for applications where even minute deviations can affect product quality, such as semiconductor manufacturing or delicate electronic assembly. The H designation highlights its focus on high-rigidity and fine-tuned precision.

LEY*E Rod, Battery-less Absolute Encoder

The standard LEY series is an electric rod actuator that mimics the form factor and mounting of a traditional pneumatic cylinder. It uses a ball screw or lead screw to move the rod linearly, providing precise control over position, speed, and force. Its compact design makes it easy to integrate into existing pneumatic systems when a switch to electric motion is desired for better control and energy efficiency.

LEY*G, High Performance Rod

The LEY-G is a high-performance rod actuator that pairs the robust mechanical design of the LEY series with a battery-less absolute encoder for enhanced reliability and efficiency. This high-performance unit is capable of handling higher accelerations and decelerations (up to 10,000 mm/s²) compared to standard models.

LEY-X8 Rod

The LEY-X8 provides the highest level of environmental protection in the rod-type lineup, featuring an IP67 rating that allows it to withstand temporary immersion in water. This model is ideal for food processing, pharmaceutical, or outdoor applications where the actuator is frequently exposed to liquid or intense cleaning cycles. It combines this ruggedness with the standard precision of the LEY series' linear motion.

LEYG Guided Rod, Battery-less Absolute Encoder

The LEYG series integrates a rod-type actuator with a guide body and two guide rods to prevent the rod from rotating and to support lateral loads. This integrated design eliminates the need for external guides, making it a compact solution for conveyor stoppers or lifting applications where the actuator must resist side-loading forces. It offers the same precise control as the LEY but with much greater mechanical stability.

Actuators with Battery-less Absolute Encoders

LEFB Belt Drive Slider

LEFS Ball Screw Slider, High Performance with

LEFS Slider, Ball Screw Drive

LEFSW Slider

LEG, High Rigidity Guide Rod

LEHF Gripper, Battery-less Absolute Encoder

LEKFS*E High Rigidity Slider, Ball Screw Drive

LEKFS*G High Rigidity Slider, Ball Screw Drive

LER Rotary Table, Battery-less Absolute Encoder

LES Slide Table, Compact

LESH Slide Table

LESYH*G, High Precision Slide Table

LESYH, Electric Slide Table

LEY*E Rod, Battery-less Absolute Encoder

LEY*G, High Performance Rod

LEY-X8 Rod

LEYG Guided Rod, Battery-less Absolute Encoder

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