Profile: PSI Automation specializes in providing air motors. Our air motors produce rotational power developed at an output shaft when compressed air is supplied to an inlet port. The objective of an air motor is to produce enough power to overcome a specified torque level and operate at a desired rpm range. The amount of torque the motor can produce is determined by its integrated gearing. It uses heavy duty spur gears and offers planetary gearing on some models. Variable rpm and power is attained by simply throttling inlet air.