Precision Lathe and Finishing Roller Machine
Our precision lathe and finishing roller machines have been designed and specialized as special machines especially for the automotive industry and guarantee excellent surface finish by fine turning and excellent surface finish by burnishing of crankshafts. The fine turning operation significantly improves the parallelism of the flat surfaces due to the high machining accuracy and machining tolerance. Subsequent burnishing significantly increases the contact ratio of the flat surfaces and results in very good running properties. In addition, the machine is characterized by short machining times, and long tool life of both the fine turning tool and the burnishing tool. The two different sizes can process workpieces with a length of 260mm - 700mm, a maximum swing diameter of 220mm and a bearing width of 18mm - 70mm.
Deep Rolling and Finishing Roller Machines
Our deep rolling and finishing roller machines were originally designedspecifically for the railway industry and guarantee an increase in operational strength and a longer service life of shafts and axles. This machine is used in particular for the machining of railway axles, but can also be used for other shaft-shaped components that require special strength. Workpieces with a maximum length of 2800mm and a maximum interference contour of 350mm can be machined on the machine. Strength increases of up to 25% are achieved with the machining process. The process of hard and smooth rolling is a purely mechanical surface treatment and therefore very effective, environmentally friendly, and resource-saving. In addition, the energy input is low, it is machined chipless without additives, and the cycle time is limited to a few minutes.
Deep Rolling and Roll Straightening Machines
Our deep rolling and roll straightening machines were originally designed specificaly for the automotive industry, and guarantee strength increases and a longer service life of crankshafts. The process can also be used for other components with heavily loaded radii and transitions, such as axle bridges or axle support tubes, in a process-integrated manner on other NSH Group machines. The energy-saving and low-maintenance deep rolling process introduces residual compressive stresses into the fillets of the crankshafts, resulting in a fatigue strength increase, and thus a significant increase in service life. Due to our four different sizes, smaller workpieces with a maximum bearing center distance of the outer main bearings up to 450mm and larger workpieces with a maximum bearing center distance of the outer main bearings up to 920mm can be produced.