Bulletin MPAI MP-Series™ Heavy Duty Electric Cylinders are compact, lightweight, high force actuators that serve as a cost-effective alternative to hydraulic solutions. Our ready-to-install electric cylinders are energy efficient and help provide machine flexibility, including precise, multi-point positioning.Bulletin MPAI MP-Series™ Heavy Duty Electric Cylinders are compact, lightweight, high force actuators that serve as a cost-effective alternative to hydraulic solutions. Our ready-to-install electric cylinders are energy efficient and help provide machine flexibility, including precise, multi-point positioning.