Hi guys, I need your help and suggestion on a machine I am designing. The attached drawing shows the part of a machine I am designing. In this the motor is rotating at a constant speed of 1000rpm and is connected to a rack which drives a pinion. This pinion is fixed on a shaft which rotates at 2000rpm and it is supported with ball bearings. The linear reciprocating movement of the rack makes the pinion to change its direction of rotation continuously. The moment of inertia of the shaft is 0.040Kg-cm2. My doubt is is this possible. Will there be any problem caused due to continuous change of rotation direction. Will there be power loss??