Plastic Lined Pilot Plant Ball mill / bead mill Water jacket on the outside of the shell, the inside of the grinding chamber is completely lined with hard plastic coating. will hold 170 kilograms of beads(media no included). Charging cover seal: has a Viton Rubber 7mm seal. Discharge cover size 3mm. The shell is enclosed in a safety cage. With mill is a Skid with the mill drive system and a control panel with a volt meter, amp meter, inverter, on/off switch, timer, timer reset, and jog button.