SAPORITI SAR 500 is a threading machine for pump and compressor screws with surprising features. 5 CNC-controlled axes: two linear axes, one rotary axis, two spindle axes. The machine works with disc milling cutters up to 440 mm diameter. Extremely hard steels such as 17-4-PH (HRC 34-HB300) can be machined with pass depth of 80 mm. Maximum workable diameter: 500 mm, max. length: 1200 mm. Milling head tilting: ± 50°. The machine is equipped with CNC Siemens 840D and motors with forced cooling. Linear axes run on precision roller bearings. The noise, which is typical of machining with disc cutters, is cut down through a special device patented by SAPORITI srl.