Sliders - Ball Screw Drive

An LEFS slider, or rodless, type electric actuator features a load mounting platform situated above a ball screw drive. A flexible seal band permits platform movement while preventing grease and foreign matter from entering the drive. Advantages include a low profile height, shorter overall length than rod types, and better positioning repeatability than belt drives.

LEFS Electric Actuator, Slider Type, Ball Screw Drive

The original LEFS slider features an inline motor with a cover. Because the motor drives the ballscrew directly, additional cost of a belt and pulley system is avoided. The motor cover is taller than the load platform, so be aware of potential interference at the origin position.

LEFS Electric Actuator, High Performance Slider, Ball Screw Drive

LEFS*F is a high performance version of the standard slider, equipped with a direct mounted, inline motor. Typical load capacities have increased 9-50%. Cycle time is dramatically reduced by a combination of higher maximum speed and acceleration/deceleration. Note that maximum speed gains are primarily in the 50-400mm stroke range, ranging from 5-36% faster depending on motor size and ballscrew pitch. A new high performance step motor controller, the JXC*H, pairs with the LEFS*F actuator. Actuator dimensions and mounting are identical to the standard LEFS, allowing an upgrade for existing equipment. I/O and actuator cables are also identical to the standard LEFS.

LEFS Slider Type, Ball Screw Drive, Battery-less Absolute Encoder

The rodless LEFS slider is an electric actuator with a load mounting platform situated above a ball screw drive. A flexible seal band permits platform travel while preventing foreign matter from entering the drive. Slider advantages include a low profile height, shorter length than a rod with equivalent stroke, and better positioning repeatability than a belt driven slider. This version includes a 24VDC motor with a battery-less absolute encoder. This encoder allows the actuator to be powered down without losing its positional awareness. The machine's PLC can access the controller's operational and positional step data through several fieldbus protocols, IO-Link, or parallel I/O.

LEKFS*E High Rigidity Slider, Ball Screw Drive, Battery-less Absolute Encoder

The rodless LEKFS*E slider is an electric actuator with a load mounting platform situated above a ball screw drive. A flexible seal band permits platform travel while preventing foreign matter from entering the drive. Slider advantages include a low profile height, shorter length than a rod with equivalent stroke, and better positioning repeatability than a belt driven slider. LEKFS*E includes a redesigned guide with 4 rows of steel balls instead of 2, improving both allowable moment rigidity and positioning repeatability. Additional enhancements vs. the LEFS include auto switch mounting grooves, improved dustproof performance with magnetic seal band adhesion, standard positioning pin holes and drop-in upgrade replacement vs. LEFS. The LEKFS*E also features a 24VDC motor with a battery-less absolute encoder. This encoder allows the actuator to be powered down without losing its positional awareness. The machine's PLC can access the controller's operational and positional step data through several fieldbus protocols, IO-Link or parallel I/O.

LEKFS*G High Rigidity Slider, Ball Screw Drive, High Performance with Battery-less Absolute Encoder

The LEKFS*G slider is the high performance version of the standard LEKFS*E. This motor upgrade improves the maximum work load, maximum acceleration, and maximum velocity compared to the standard motor. Lower cycle times can be realized with the higher performance. All other features of the LEKFS*E are included.

25A-LEFS Electric Actuator, Slider Type, Ball Screw Drive, Step Motor/ Servo Motor, Secondary Battery

The 25A- series variations are compatible with secondary battery manufacturing for electronics, automotive, and other vehicle types. Design goals include eliminating copper (Cu) and zinc (Zn) materials where possible, and employing a low dew point grease that retains lubricity even in low manufacturing temperatures. Please note that copper and zinc materials are used for the motors, cables, controllers and drivers.