Open Throat Vertical Chamber
The open throat design allows hay from the windrow to flow over the pickup and stuffer fingers and into the vertical bale chamber without restriction. The vertical bale chamber is the cavity formed by the belts which assists in quick bale starting.
Variable chamber balers work by “varying” the chamber size as the bale size increases. There are no floor rollers used with an open throat vertical feed system because floor rollers can wrap in certain conditions, or cause problems shattering leaves with dry hay.