Use a radius platen to grind a large hollow radius beyond the limit of the largest wheel sizes possible on your grinder. (A 36” radius platen has the same curvature as a 6 foot diameter wheel). Platens are 2” wide x 8” long and approximately 5/16” thick at the ends. They are tapped for 1/4-20 fasteners and the mounting holes are 6.75” apart.

Platens are case hardened to Rockwell C60 for wear resistance