Thanks to its high efficiency patented brushless motor, the Mirka DEROS also has plenty of power to get the job done quickly. Indeed, its performance is actually comparable to a conventional 500W electric machine and that ensures it maintains a constant speed even under heavy load. The innovative design of the brushless motor means there are few wearing components so it is low maintenance, ultra-reliable and has a long lifespan. In contrast to conventional electric machines, the Mirka DEROS also features a ‘closed construction’ which prevents dust from entering the motor where it can cause wear and damage.