Track assemblies for power machines include a track frame, including a primary portion and a second portion moveable with respect to the primary portion. A plurality of rollers are positioned along the primary portion of the track frame relative to each other and the center of gravity of the power machine to provide an improved capability to compensate for vibration generated as the power machine moves over a support surface. In some aspects, a portion of a tensioning idler is positioned within a cylinder defined by one of the plurality of rollers.