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.
- Body sizes: 16, 25, 32, 40
- Maximum work load: 60 kg
- Maximum speed: 1200 mm/s (H lead, step motor, size 25 or larger)
- Stroke range: 50 to 1000 mm in 50 mm increments
- Positioning repeatability: ±0.02 mm
- Motor types: high load step motor or high speed servo motor
LEFS Electric Actuator, Slider Type, Parallel, Ball Screw Drive, Step Motor (Servo/24 VDC), Servo Motor (24 VDC)
The LEFS with parallel motor mounts, mounts the motor alongside the actuator axis. The motor is coupled to the ballscrew by a belt and pulley system. This model has two advantages. The overall length is considerably shorter than the inline LEFS, and the motor cover is below the surface height of the load platform to avoid interference. Motors can be mounted to the left or right of the axis.
- Body sizes: 16, 25, 32, 40
- Maximum work load: 60 kg
- Maximum speed: 1200 mm/s (H lead, step motor, size 25 or larger)
- Stroke range: 50 to 1000 mm in 50 mm increments
- Positioning repeatability: ±0.02 mm
- Motor types: high load step motor or high speed servo motor
11-LEFS, Electric Actuator, Slider Type, Ball Screw Drive, Step Motor/Servo Motor, Clean Room
The 11-LEFS is the clean room version of the standard LEFS. This version is only available with the inline motor. Strokes are available in 100mm increments only.
- Same features and performance as standard LEFS, plus:
- ISO Class 4 / US FED STD 209E Class 10 Clean room
- Built-in vacuum piping with exhaust port for removing generated particles
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 termpertures. Please note the copper and zinc materials are used for the motors, cables, controllers and drivers.
- Same features and performance as standard LEFS
- Stainless steel bolts for construction
- Low dew point grease functional down to -70°C
- Copper and zinc free except for motor, cables and controller
- Non-standard materials for compatibility with secondary/rechargeable battery manufacturing