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.  Floor rollers are not used with an open throat vertical feed system because they can wrap in certain conditions or cause problems shattering leaves with dry hay.