Your Technology

Turning Process - the Heart of metalcutting Manufacturing  

Efficient turning processes are essential machining technologies to produce rotationally symmetrical components using geometrically defined cutting edges in various angular positions with the tool stationary. They belong to the core competences of the NSH Group and are indispensable for the machining of components in the field of metalworking. In our lathes and turning centers, we combine a wide variety of turning processes to create a head start for your cost- and resource-efficient production. It is essential that our machines combine efficient roughing processes to achieve a high metal removal rate and high-precision finishing processes with high stability and long-term accuracy. 

External Turning

External turning involves the efficient machining of external diameters and surfaces by longitudinal, face, and profile machining. We carry out these processes on our machines with two axes or simultaneously in 4-axis machining. The focus is on achieving high metal removal rates with simultaneous long-term accuracy, resource efficiency, and minimum cycle times.

Internal Turning

Internal turning comprises the efficient machining of internal diameters and bores of a component by longitudinal and profile machining. The focus is on achieving high surface quality, maximum stability, and optimum chip removal. Drilling quills as well as conventional, vibration-damped, and NC-controlled boring bars are used for this purpose. The optimization of the chips and their removal is achieved by the use of pressure or volume flow-controlled cooling lubricant. Due to our solid machine design, we can ensure that the occurrence of quality-impairing vibrations during machining is reduced to a minimum.

B-axis Turning/ TRAORI

Hier ist das Vorschaubild für die Technologie Traori-Drehen zu sehen

B-axis turning/TRAORI turning is an advanced turning process in which simultaneous movement of linear and rotary axes enables dynamic orientation of the tool on the workpiece surface. With the aid of a transformation process, the programmed movement point is placed on the tool cutting edge located in the rotary axis, without this having to be taken into account when programming the individual axes. In addition to machining complex contours, the process also facilitates the programming of collision-free undercuts. In addition, tool life is significantly improved when this process is used, especially when machining materials that are particularly difficult to machine. Due to specific design adaptations of our machining centers, the dynamic synchronization of the rotary and linear axes has been optimized in such a way that no contour damage can occur on the workpiece.

Hard Turning

Hard turning is a turning process in which very hard, hardened, and high-alloy materials are machined with a high surface quality, which enables the substitution of cost- and resource-intensive grinding processes. The stability of our machines is an indispensable prerequisite for carrying out this process reliably, and achieving considerable cost and time savings compared to conventional fine machining processes.

Thread Turning

Thread turning is a turning process in which cylindrical internal and external threads as well as conical threads are produced by controlled tool movement synchronized with the spindle in a longitudinal turning process. In some cases, helical or conical surfaces and various pitches and thread depths can be produced in several successive cuts.


Grooving is a turning process in which axial and radial shapes such as deep grooves and steep-walled geometries can be produced using narrow grooving tools. In this process, uninterrupted chip removal takes place using the entire width of the cutting edge. Due to our highly stable machine design, we can use particularly wide cutting edges to achieve the highest possible metal removal rate without vibration

Twist-free Turning

Twist-free turning is used to produce external surfaces without twist, as is necessary for sealing seats. This makes it possible to substitute costly finish-grinding processes and produce in a cost- and resource-saving way. All the different processes available on the market for producing these surfaces can be integrated on our turning and machining centers.