Reishauer RZ 400

The Reishauer RZ 400 is listed as a CNC continuous generating gear grinding machine for external spur and helical gears up to 400 mm (15.7 in) in diameter and module 8 mm, with a 32 kW (43 hp) continuous grinding spindle. It is not in Reishauer's current lineup, and the listed figures are unverified, so use them to judge whether a used RZ 400 is worth a closer look and take the binding values from the machine's own papers.

The envelope goes beyond thin disc gears: 250 mm (9.84 in) of face width, a maximum workpiece length of 350 mm and a workpiece weight of up to 200 kg (441 lb). On wide gears near the top of the diameter range, the 200 kg (441 lb) limit may be reached before the diameter limit is.

Both the workpiece spindle and the grinding spindle are listed as direct-drive and backlash-free, and the grinding spindle runs at up to 6,000 RPM. The tool is a cylindrical grinding worm, CBN or vitrified, with integrated continuous dressing. The table also lists 6 CNC axes and real-time, sensor-based CNC thermal compensation.

Loading is by an integrated ring loader or gantry loader, with a load/unload time of under 8 seconds. The electrical supply is listed as 400 VAC 3-phase 50 Hz, so a plant on a different supply has to plan for conversion. At 14,000 kg (30,865 lb), the machine falls between the RZ 550 at 12,900 kg and the RZ 1000 at 15,500 kg.