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The external structural shape, or the measurements for angular head and the milling tool is set by an immersion depth of 221 millimeters with a width of 70 millimeters. The high cutting forces of the bore, measuring 31 millimeters in circumference, are created by grey cast iron (GG60) and aluminum machining, mixed machining, which, in the end, is completed with a milling tool which cuts across the middle. This requires a very strong design, which is reached through rigid taper roller bearings amongst other things. The forces from machining are absorbed by a HSK63 support and an additional 3-point support on the side of the spindle. Because of construction constraints, the maximum tool change weight of 8 kilograms had to be considered, as the tool change would otherwise not be automatically interchangeable via the tool magazine.