The powerful HH 240 hob head enables workpieces up to a module of 12 mm to be machined. With different gear rations, up to 3000 RPM are possible. Due to the large travel range of the counter bearing, very long or, if necessary, relatively short tools can be used. As standard, even hobs with a maximum diameter of 240 mm can now be accommodated.

Special attention was paid to perfected dry machining during the development of the new machine generation. Thanks to the design-optimized machine bed, chips can be removed even better. In addition, essential components such as the machine table, the machine bed, the machine column and the flat guides have been covered with stainless steel covers so hot chips have no influence on the temperature behavior. This guarantees constant temperature behavior and has a significant effect on gear quality and process stability.

With the control panel, Liebherr is intelligently dividing the programming and operation of the machine between two system parts: The large, fixed monitor unit LHStation for data input and process monitoring and the standardized, mobile handheld terminal LHMobile with context-sensitive user guidance during set-up. Both units have a multi-touch surface as well as tactile elements for optimum operating speed and operating safety.

Optimum machine accessibility during maintenance work is a prerequisite for ensuring productivity. For this purpose, all necessary maintenance access points are equipped with doors. Moreover, to enable quick and easy additional monitoring of specific statuses, window panes are inserted into the maintenance doors. This means the machine operator or maintenance personnel can read the signals from outside in very little time. An enclosure for the hydraulics has also been integrated into the new machine design. This ensures sustainable reductions to hydraulic power unit noise.

The chamfering technology used can be either the familiar ChamferCut and/or the newly developed FlexChamfer process. A particularly notable feature is that workpieces with a diameter of up to 500 mm can now also be chamfered during the machining process. In addition, both processes can be used. This means that the finger milling unit can be mounted quickly and easily. This allows the customer to chamfer large workpiece lot sizes with the economical and fast ChamferCut process. However, if the workpiece lot sizes are very small, the FlexChamfer process can be used and the workpieces can be chamfered very quickly and flexibly. This is unique to this gear hobbing machine.