SMC 11-LEFS16AA-250 | Clean Room Electric Actuator LEFS Series Ball Screw Drive 16mm Width 250mm Stroke Step/Servo Motor 24VDC

The SMC 11-LEFS16AA-250 is a clean room specification electric actuator from the LEFS series featuring ball screw drive with step motor or servo motor capability at 24VDC. Part number decoded: LEFS = LEFS series electric actuator with slider type and ball screw drive, 16 = 16mm width, AA = motor type and controller specification (A = step motor servo 24VDC, A = specific configuration), 250 = 250mm stroke.

The ball screw drive mechanism is the key differentiator from the LEFG belt or rod-driven actuators. A precision ball screw converts rotary motor motion into linear motion with minimal backlash, high efficiency, and superior positioning accuracy. The ball screw provides mechanical advantage, generating higher thrust force from a smaller motor compared to direct-drive mechanisms. For clean room applications requiring precise repeatability at specific positions along the 250mm stroke, the ball screw's inherent precision makes the LEFS the preferred choice over the LEFG for tight-tolerance positioning tasks.

The LEFS16AA-250 provides precision ball screw positioning in the compact 16mm width. For support-guided slider motion without ball screw precision, the LEFG16-S-50 provides a simpler option. For longer strokes at 16mm width, the LEFS16AA-300 extends to 300mm. For specific controller and cable configurations, the R36N3 suffix adds pre-configured motor controller compatibility. For wider body with higher payload, the LEFS25 and LEFS32 provide increased capacity. Requires SMC-compatible step motor controller. Clean series (11-). RoHS compliant.