The IMA55 high-force servo linear actuator is available with an optional roller screw that boosts its thrust capability to 6,875 lb force. A compact IMA22 integrated motor actuator is also available. It features a ball screw and can deliver up to 325 lb force. Both models have a hollow-core rotor design that allows the nut of the screw to pass inside the rotor creating a compact package. The motor features skewed stator windings to minimize cogging and provides efficient motion with improved force repeatability. The IMA series are available in four sizes and operate at stroke lengths from 3 to 18-in. at speeds up to 24-in./sec. All integrate a servomotor and a ball or roller screw for long service life.