When turning large and heavy workpieces with diameters of up to 900 mm, Okuma’s LU7000 EX is said to reveal its true potential. Equipped with a bed that is 2 m long, even very long parts can be machined, aided further by a self-travelling tailstock. These specifications make the LU7000 EX a good choice for the manufacturing of oil and gas parts.
The machine is equipped with two turrets that can be utilised simultaneously. Said to be a first for this class of machine, the lathe offers a milling turret that allows for a chip removal rate of up to 120 cm³/min.
For ideal cutting conditions, manufacturers can choose from different main spindles. Sizes range from a bore diameter of 200 mm with a maximum speed of 1500 rpm, to a bore diameter of 560 mm with a maximum speed of 350 rpm.
When designing the LU7000 EX, Okuma also focused on achieving high dimensional accuracy. The lathe’s high constructional rigidity along with Okuma’s Thermo-Friendly Concept, contribute to this goal. These innovations avoid any generation of immoderate heat during the manufacturing process, detect changes in temperature and compensate for thermal deformation. This way, inaccuracies due to thermal changes can be prevented.