Hermle C 250

The Hermle C 250 is the entry point into Hermle's 5-axis lineup, and it's a machine that punches well above its 'entry-level' label. Built in Gosheim, Germany, it shares the same mineral-cast construction and swiveling rotary table concept that's made Hermle a household name in high-precision 5-axis work.

Axis travel runs 600 x 550 x 450 mm (23.6 x 21.7 x 17.7 in) on X/Y/Z. The A-axis swivels +/-115 degrees while the C-axis rotates a full 360 degrees continuously. That generous A-axis range gives you access to undercuts and steep-wall features that machines with +/-100 degree tilt can't reach. The collision circle sits at 770 mm (30.3 in) in the A-axis 0-degree position, and the standard table plate is 320 mm (12.6 in) diameter with an optional 450 mm (17.7 in) upgrade. Max table loading is a solid 1,100 kg (2,425 lb), which is impressive for a compact 5-axis platform.

The standard spindle turns at 15,000 RPM through an HSK-A63 taper, with an 18,000 RPM option that delivers 20 kW (27 hp) and 173 Nm of torque at 20% continuous duty. That's enough muscle for productive roughing in tool steels while still having the speed for finishing aluminum. The worm-gear-driven rotary table won't win any speed contests against direct-drive competitors, but it provides rock-solid rigidity under load and excellent positional accuracy.

Hermle's mineral-cast frame is the C 250's secret weapon. It absorbs vibration three to five times better than cast iron, keeps thermal growth predictable, and contributes to the kind of surface finishes that make secondary polishing optional on mold work. The machine weighs approximately 8,200 kg (18,078 lb), which is substantial for its footprint and speaks to the mass behind those cuts.

The standard tool magazine holds 30 tools with options for 50 or 88 positions. Max tool length is 300 mm (11.8 in) and max tool diameter is 80 mm (3.1 in). Rapid traverse hits 35 m/min (1,378 ipm) on all three linear axes. The Heidenhain TNC 640 control comes standard, with Siemens 840D SL available as an option. Both are top-tier controls for simultaneous 5-axis work.

One of the C 250's standout features is its footprint efficiency. Hermle claims the largest working area relative to installation area in its class, meaning you're not giving up shop floor space for capability you can't use. The machine ships as a single unit without disassembly and doesn't require a foundation, which keeps installation costs and downtime low.

Direct competitors include the DMG Mori DMU 50, Makino D500, and Haas UMC-750. The Hermle sits at a premium price point, but shops that have run one rarely go back. Service reputation is exceptional, with most service calls attributed to operator error rather than mechanical failure. Specs sourced from Hermle published data and authorized distributor documentation.