Combines 7720 titan after market parts

[Bruno]

I am very satisfied with the concave, enclosed cylinder, and airfoil chaffer on my 6620, which I got from St. John Welding.

 

[Winst]

I too would recommend the St. John's hardsurfaced concave. As much work as it is to install a concave, put one in that will last a long time.

 

[Joe]

I suggest the one stop shopping at loewen, as they likely would have everything you need.