DN Solutions PUMA 700 LM II

The DN Solutions PUMA 700 LM II is a heavy-duty large turning center targeting aerospace, oil and gas, power generation, and heavy equipment sectors where workpiece diameters, weights, and material toughness exceed what standard production lathes can handle. This is a machine built for turning parts that other machines cannot: large-diameter aerospace rings, turbine casings, pressure vessel components, and heavy oil field equipment.

The main spindle is driven by a 37 kW (50 hp) motor producing up to 5,554 Nm (4,096 ft-lb) of torque at low speed — a figure that places the PUMA 700 LM II in a class with industrial floor-type lathes rather than production turning centers. Spindle speed reaches 1,500 RPM through a 3-range gearbox that allows optimal torque delivery across the workpiece diameter range. Maximum swing over the bed is 1,040 mm (40.9 in) with a chuck size of 530 mm (20.9 in) for the standard configuration. The spindle nose carries an A2-20 interface.

Axis travels run 545 mm (21.5 in) on X and 1,560 mm (61.4 in) on Z in the standard LM configuration, with the L designation indicating extended length capability. This Z-travel accommodates large shaft work, long cylinder bores, and aerospace structural components. Rapids at 10 m/min on both axes are commensurate with the machine's mass and the workpiece sizes involved — these are not high-cycle production machines, but precision workhorses for large, complex parts.

Live tooling is incorporated via a BMT 65 turret with driven tools at up to 1,500 RPM and 5.5 kW (7.5 hp). At this workpiece size, driven tooling is used for auxiliary drilling, tapping, and occasional milling on large parts rather than high-speed production milling. The control is FANUC 0i-TF Plus with iHMI touchscreen; Siemens 840D SL is available as an option for aerospace and defense shops with strict control requirements.

Pricing for the PUMA 700 LM II runs $400,000-$700,000 depending on configuration, spindle specification, and options. Used machines from the Doosan PUMA 700 series sell in the $120,000-$250,000 range. This price tier reflects the machine's capacity class — comparable large-bore turning centers from Okuma, Mazak, and DMG Mori in similar configurations price similarly.