Patent ID: 8628147

Claim:
A mining machine comprising: a vehicle body; a pair of arms extending forwardly from said vehicle body; and a cutter assembly mounted on the pair of arms and including a drum cutter, the drum cutter including a first drum shell half and a second drum shell half coupled to the first drum shell half to form a substantially cylindrical drum, the drum cutter defining a longitudinal axis and a central plane intersecting the longitudinal axis, a split line being defined where the first drum shell half mates with the second drum shell half, the split line defining a first mating interface offset from and parallel to the central plane and a second mating interface offset from and parallel to the first mating interface, the first mating interface and the second mating interface being offset by a step, wherein the first drum shell half and the second drum shell half are identical, wherein the first mating interface defines a first mating surface between the first drum shell half and the second drum shell half, and wherein the second mating interface defines a second mating surface between the first drum shell half and the second drum shell half, the first mating surface and the second mating surface not being parallel to each other.