The expanded line of ERD electric rod-style actuators includes enhancements such as ball screws, motor mounts for NEMA and metric stepper and servo motors, plus a guide option. The addition of ball screw choices improves the force range of the ERD up to 200 lb. The combination of NEMA and metric motor mounts allows users to select their preferred brand of servo or stepper motor. All three sizes are available with an optional external guide system that prevents rod deflection and rotation during operation. The guide also features a tooling plate for mounting hardware.