DMG Mori CTX 2500

The DMG Mori CTX 2500 is the long-bed heavyweight in the CTX universal turning lineup, engineered specifically for extended-length shaft work that exceeds the capacity of standard turning centers. With a maximum turning length of 2,540 mm (100 in) and 700 mm (27.6 in) turning diameter, the CTX 2500 handles drive shafts, propeller shafts, hydraulic cylinder assemblies, and long structural components that are too long for most machines in this class.

The main spindle delivers 44 kW (59 hp) at 2,000 RPM with 2,310 Nm (1,704 ft-lb) of torque, the same powerplant found in the CTX 750 but paired with a significantly longer bed. The A2-11 spindle nose with an 18-inch (457 mm) chuck handles large-diameter stock, while the 127 mm (5.0 in) bar capacity supports production bar-fed work on oversized material. A programmable servo-driven tailstock with MT6 taper provides the rigid support that long workpieces demand.

Milling capability comes through the BMT 65 turret, spinning driven tools at up to 10,000 RPM with 40 Nm of continuous torque. The Y-axis adds plus/minus 80 mm of travel for off-center features. On long parts, the ability to mill features without unclamping and transferring to a second machine is especially valuable since alignment accuracy between turned and milled features is inherently better in one setup.

Box guideways on all axes provide damping characteristics critical for long-shaft turning, where slender workpieces are prone to chatter. The thermal compensation system with cooled ball screws and bed temperature control holds tolerances over the extended travel range. At 14,000 kg (30,865 lb), the CTX 2500 has the mass to absorb vibrations during heavy cuts on long sections.

The CTX 2500 runs CELOS with Siemens 840D sl control. Pricing runs 80,000-00,000 depending on configuration. Used machines from 2014-2020 trade between 90,000 and 20,000. It competes with the Mazak QT-500 long bed, Okuma LB45 II-M, and purpose-built long-bed lathes from Weiler and Heyligenstaedt.