What is the maximum OPM (orbits per minute) of the pad while running, for RO sander models 332, 333, 333VS and 334? Support April 07, 2021 15:06 Updated The pads maximum speed is 12000 OPM. Related articles How fast should the pad on these sanders rotate? What are the contents of the 12100 drum kit? Where can I start an online warranty repair claim? Is there a wait time between shots? What causes the sander to shake violently? Comments 0 comments Please sign in to leave a comment.