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MAG’s new VDF 800 DUS Big Bore CNC lathe has a 365mm spindle diameter, an 820mm swing over the bed, an 8,000kg part capacity and a 20kN Z-axis cutting force.

Suitable for drill string parts, drive shafts and pipes, the machine features a main drive rated at 37kW (50hp) continuous and 55kW (74hp) maximum and 7,200Nm (5, maximum torque.

A 900rev/min top speed – nearly twice as fast as comparable lathes – gives the machine job-shop flexibility to handle a range of smaller-diameter parts by maintaining the tool surface speeds needed to produce required finishes.

The two-speed automatic transmission is mounted behind the headstock to eliminate thermal effects caused by the gearing, with a backlash-free overload coupling to protect the gearbox.

The machine’s A20 spindle is supported with a thermally optimised arrangement of lifetime-lubricated bearings that includes a 460mm-diameter front bearing to withstand maximum loads and speeds.

The VDF 800 DUS is available with a Siemens or Heidenhain CNC, which is supplemented with an operator panel and ergonomically designed handwheels for setup or teach-type programming.

For high job-shop flexibility in running small lots of different parts, the CNC can be taught a cutting routine using the handwheels, with the CNC replicating that routine on subsequent parts.

The VDF 800 DUS is built on a torsionally stiff, box-type Meehanite cast-iron bed, measuring 560mm in width, that retains its core sand to enhance vibration damping for long tool life and smooth part finishes.

Hardened double-V guideways and an oversized cross slide provide stability for the tool carrier and distribute high axial cutting forces to prevent skewing.

Large chip chutes in the bed ensure the smooth flow of swarf to the chip pan at the rear, preventing the heating of the bed, while sliding doors on the rear of the machine facilitate access for chip disposal.

The machine’s power supply, electric cables, power tracks and coolant pump are all located outside the work zone to simplify maintenance and protect them from coolant and chips.

The VDF 800 DUS Big Bore is available with turning length sizes of 1m, 2m, 3m and 4m as standard (or up to 20m as an option).

IMTS, Chicago, Booth S-8519.

MAG Industrial Automation Systems

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