Portescap, a Danaher Motion company, introduces 22mm brushless motors. The motors weigh 94 grams and provide 50 watts of power at up to 73,000 rpm. They operate at a cool 25ºC and quiet 55 dB noise level, and feature possible inertia of 2.3 x 10-7 kmg2. This is a 10% inertia reduction compared to previous, similarly sized motors from Portescap, according to a press release. Additionally, a new internal design reduces motor length by 10% and vibration by as much as a 400%. "Portescap's new 22mm brushless motors with slotless technology are a perfect complement to our 16mm models, and are an ideal solution for maximizing the comfort of patients who use bi-level respirators," says Dave Beckstoffer, Portescap's product manager. Slotless motor technology provides fast acceleration and deceleration due to low inertia and a low mechanical time constant.