Portescap offers Fast, Powerful and Precise Positioning Stepper Linear Actuator. Portescap is certified I.S.O. 9001-2000 for quality management, ISO 14001:2004 certification for environmental management, and ISO 18001:2007 certified. Fast, Powerful and Precise Positioning Stepper Linear Actuator has ease in applications. The motors are driven from same source thus maintaining synchronism. Portescap offers customization of this product. This Linear Actuator has open loop control and thus no encoders are necessary.