HERMLE C 22 MT – Highly integrated complete machining

HERMLE C 22 MT – Highly integrated complete machining for demanding manufacturing tasks

With the launch of the C 22 MT, Maschinenfabrik Berthold HERMLE AG is expanding its portfolio of 5-axis machining centres to include a mill-turn solution designed specifically for process integration. The machine is based on the tried-and-tested C‑22 platform but has been specifically further developed for combined milling rotational machining, thereby meeting the growing demands for precision, flexibility and cost-effectiveness in machining.

The focus of this development is on the full integration of several manufacturing technologies into a single machine. In addition to the conventional simultaneous 5‑axis milling process, the C 22 MT also enables turning operations and can be expanded to include grinding technologies and power skiving. This makes it possible, in particular, to efficiently rough-machine rotationally symmetrical component geometries in turning mode and then finish them to a high degree of precision without having to re-clamp them.

This continuous process chain within a clamping setup has a direct impact on component quality. By eliminating reclamping and reference errors, the achievable form and position tolerances increase significantly, while at the same time process reliability is improved. At the same time, this results in significant time savings, as setup operations are reduced and machining strategies can be optimally combined.

Machining centre C 22 MT (mill-turn)
Machining centre C 22 MT (mill-turn)
Milling rotational machining
Impeller machining milling and turning
Power-Skiving

From an economic perspective, the C 22 MT is primarily designed to reduce unit costs. Combining several machining steps results in shorter throughput times and improved utilisation of the resources employed. At the same time, the need for additional machine capacity and floor space is reduced, as process steps which were previously carried out separately on different machines are now combined within a single system. This high level of integration also supports sustainable manufacturing concepts by reducing energy and material consumption.

In terms of design, the C 22 MT is based on a specially further developed swivelling rotary table from the SRT 320 MT series which has been systematically engineered to meet the requirements of combined machining processes. In addition to a redesigned A‑axis housing and an optimised C‑axis bearing, the system features high-performance clamping technology and a water-cooled axis structure for thermal stabilisation. These measures ensure high rigidity and positioning accuracy even under torsional loads.

In terms of performance, the machine covers a wide range of applications. Workpieces with a diameter of up to 320 mm can be machined; workpiece weights of up to 300 kg are permitted in milling mode and up to 150 kg in turning mode. The integrated motor spindle achieves speeds of up to 20,000 rpm, while the machining table speed in turning mode is up to 1,500 rpm, depending on the control. The available clamping torque of 400 Nm also allows for the machining of challenging materials and geometries.

A key feature of the C 22 MT is the seamless integration of clamping and automation solutions. The HERMLE pallet clamping system (PCS) is integrated directly into the machining table and requires no additional clamping plates. This reduces not only the overall height but also improves the overall rigidity of the system. At the same time, the integrated clamping status monitoring system ensures a high level of process reliability during automated operation.

The machine is also designed to accommodate a range of automation solutions. In addition to the HS flex handling system, robot systems such as the RS 05-2, the RS 1 or the RS 2 can also be adapted in future. This allows the system to be used flexibly in low-labour or fully automated production environments.

Particular attention was paid to safety features in mill-turn technology. The safety enclosure is therefore fitted with laminated safety panes and a specially designed cabin top to protect the operator in particular.

Even in the area of peripherals and the machine environment, the design has been adapted to the specific requirements of mill-turn machining. Due to the shape and volume of the chips produced, a specially designed hinged belt conveyor is used. In addition, an ICS system with integrated bed flushing ensures reliable chip removal and stable process conditions. Optimised accessibility and adapted safety enclosure designs also ensure good maintenance and service conditions.

With the C 22 MT, HERMLE is strategically positioning itself in the highly competitive market for modern mill-turn centres. By combining high precision, exceptional rigidity and comprehensive technological integration, the machine is particularly suited to applications in the aerospace and medical technology sectors, as well as in tool and mould making.

The planned market launch is scheduled for the period 2026 to 2027, with the first presentations due to take place at leading international trade fairs. HERMLE is therefore continuing its course of technological development and offering users a future-proof platform to meet the growing demands for flexible and cost-effective complete machining.