Look here for Rowland Passenger Lining Grinding Machinery
Inside/Outside Radius Grinding Machine for Small Radius Parallel Brake Linings Model VLG/S Inside/Outside Radius Grinding Machine for Large Radius Parallel Brake Linings Model VLG/L Designed to grind the inside or outside radii of parallel brake linings, the lining is ground to thickness as it passes between a vertical, diamond coated grinding drum and a powered drive roller.