GF Machining Solutions’ Mikron MILL S600U five-axis machining centre for mould and die makers is now equipped with new HVC140 (StepTec) spindles. The StepTec Opticool spindle system, with its enhanced polar thermal balance, controls the temperature of the machine’s spindle and spindle bearings to improve part accuracies and surface finishes.

StepTec’s HVC140 spindles deliver high power and speed (13.5 kW/42,000 rpm), and feature proven OptiCool technology. Also contributing to the spindle’s performance is an all-new bearing design using ceramic hybrid bearings. As a result of their incorporation, radial and lateral stiffness are increased by 16% and 60% respectively. Furthermore, radial and axial run-out, as well as repeatability, of less than 2 µm
is achieved at the tool interface.
The machining centres, with their rigid base construction, combine high dynamic direct-drive technology with a range of design and build features and integrated ‘Smart’ software modules. These include: Ambient Robust, which monitors and regulates thermal variation detected in the machine’s base and drives; OSS (Operator Support System), which helps customers optimise their machining processes based on workpiece specifications/dimensions and their specific machining priorities – speed, accuracy and surface finish; and ITC/ITC 5AX (intelligent Thermal Control), which eliminates the need for, or reduces the time required for warm-up cycles.
For further information www.gfms.com