The newly designed Extrak actuators enable speeds of up to 1.6m/s to be achieved using Exlar’s linear guide rails and speeds of up to 5m/s when Exlar’s roller guide system is employed. This enhanced speed capability greatly increases the application versatility of the actuator, allowing the fastest index times for users along stroke lengths that extend to 7.6m. Optional limit switch packages allow the stroke length limits and homing reference positions to be set within the physical limits of the actuator. The construction of the Extrak actuators enables them to carry loads up to 750kg in high-duty applications but even higher loads are possible for intermittent duty service. The construction comprises a precision aluminium frame/housing with a movable platen. The moving platen rides on one of the two different types of guiding systems. The first type incorporates a linear guide arrangement offering high load capacity and high offset load or moment capability. The alternative guiding system employs roller guides. These are designed for lower payload capacities than the linear guide rails, but allow operation at speeds reaching 5m/sec.