Clutch Servo Motor RPM?

Hey am trying to figure out if the servo motors such as the 2Kg 180° Clutch Servo SKU:SER0050 have a certain speed they operate at, if its variable or fixed and what is the fastest it can go? It has torque listed, maximum range and the PWM needed to achieve it but nothing about rotation speeds/acceleration. Am trying to figure out if the speed it can rotate at through its range of motion will be fast enough for my application. Cheers!