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The vertical grinding centres of the KEHREN Ri series have been the optimal combination of production performance and precision for years. These characteristics result from the more than 200 machines delivered worldwide, as well as the know-how and continuous further development at KEHREN. The KEHREN Ri series is characterised by the following features: — Universal application possibilities — Hard turning and milling — Wear-free linear drives in X- and C-axis — Hydrostatic bearings in the X- and C-axis — Concentricity and axial runout less than 1.5 µm — Graduation accuracy ± 1 angular second — Rotary table sizes up to >1,600 mm — Outstanding long-term accuracy and durability — Stable cast iron construction, best damping properties — Optional Y-axis — Optional double table version — Siemens Sinumeric One control — Remote diagnosis via mobile network or direct internet connection — User-defined access authorisations via RFID

In response to the ever-increasing demands in the area of durability, precision and versatility, a new compact grinding machine, the NEO 5, was developed and built. With the NEO 5, we can present our customers with another first-class product. The NEO 5 is particularly characterised by the following features. — -Compact space-saving design (9 m²) — -All operations with one spindle (swivel range +95°/-90°) — -Hard turning and milling — -Hydrostatic bearing in the C-axis — -Circular and axial run-out error less than 1 µm — -Pitch accuracy ± 1 angular second — -Linear drives in the X and Y axes (if selected) — -Accuracies of up to IT0 — -Table continuous load up to max. 1000 kg — -Newly developed control concept based on Siemens Sinumerik ONE — -Simple and consistent operation, high availability through 3-stage fault management — -Electronic maintenance book (guidance), documentation, online-helps

The millGrind series is specially developed for the requirements of machining in the turbine industry as multiple technology solution in one set-up. The modular machine system in travelling table design allows an individual configuration of the machine according to the customers' needs. Automatic tool and diamond roll changing allows the machining to machine with — Al-oxide, CBN and diamond grinding wheels — Drills — Milling cutter — Laser cladding — Measuring of the unfinished workpiece — Measuring of the machine workpiece including rework in one set-up. This guarantees that all machined surfaces run to each other and errors are avoided by repeated re-chucking. In addition to the machining of new blades and vanes for rework a laser cladding device can be added. This allows the measuring, cladding and grinding or milling of the worn areas.

The mono-base design of the multiLine models allows grinding widths (Z-axis) of up to 900 mm. The compact, steel base designed multiLine model is equipped with linear guides in all three axes. The feed axes Y and Z are driven via servo motors and ball screws. For machines up to 2,000 mm the table is driven via ball screw (KGT). For longer tables up to 6,000 mm a linear motor (LIM) is used. The standard version of the multiLine comes with high-precision linear scales for positioning of the vertical axis. The direct drive grinding spindle with up to 37 kW guarantees optimal torque transfer. To meet your requirements this model can easily be customized through a large variety of available options like different types of overhead and table mounted dressing units for using Al-oxide or CBN/diamond grinding wheels.

Our gantryLine models can process large, wide and heavy workpieces up to lengths of 5000 mm and widths up to 2000 mm with high precision. Special designs are also available to process wider and longer workpieces. This machine line with its variety of available features is suitable for surface grinding applications all the way through complex CNC manufacturing cells. Next to the horizontal grinding spindle a vertical tiltspindle can be mounted for grinding for example machines beds with under grip. The sturdy gantry-style machine design features a modern vibration-free mechanical table drive, linear guideways in all axes, an over-sized spindle drive as well as ball screws and linear scales in vertical and cross axes. These features guarantee that today’s expectations in the precision machining of large surfaces are met for rough machining and high precision machining as well. The gantryLine achieves highest workpiece precision and surface quality.