Extra large blocks weigh in excess of 20,000 lbs (10,000 kgs), so Rottler had to come up with a completely new concept in machine design. The EM109H is a massive machine manufactured to handle these very large and heavy engine blocks. The EM100H Series is exceedingly capable of performing such jobs as boring, surfacing and line boring. Rottler’s Programmable Automatic Control makes these machines fast and accurate. The machines work like advanced CNC machining centers but Rottler’s Conversational Programming Technology makes them very easy to operate. No programming knowledge is required and operators are trained by factory technicians in just a few days to run these machines at full speed.