Combines Concaves on 9650 STS

Suggest you use the narrow space, small wire concaves. The round bar concaves will not retard material flow nearly as well, which will require tighter setting for thresh which in turn will require higher rotor speed for feeding the machine, breaking up trash more than necessary, adding extra shoe load. Also the round bar set will allow heads to escape before threshing due to wider spacing. hope this is clear.

If you want a concave that will not bow and is built heavy duty for the STS models, loewen has one available built to last.