Brand new, for the new era in large-capacity, high -efficiency helical rotor production, the HG500 is quite possibly the most versatile high-precision helical profile grinding machine of its kind.

Maximum flexibility in production strategies

Offering incredible flexibility, the HG500 will rough and finish-grind rotors of as little as 50 mm in diameter, right up to a maximum 510 mm in diameter and 1,500 kg in weight.

In standard configuration, the HG500 can be equipped with either a 500 mm vitrified dressable aluminium oxide grinding wheel for maximum flexibility in production strategies – or use plated CBN roughing and finishing wheels for cost-effective volume production.

Alternatively, for manufacturers who precision-grind the largest of helical components, the HG500 can be specified in vitrified-only configuration. This equips the HG500 to use a 600 mm vitrified dressable aluminium oxide grinding wheel for maximum wheel life when grinding large components.

Advanced control, integrated safety, reporting and security are assured through the use of Siemens SINUMERIK ONE CNC. A travelling grinding head, instead of a conventional grinding table, means maximum probing strategies from the onboard Renishaw OSP60 scanning probe with Sprint™ technology. Variable-frequency cooling from a high-pressure unit with wheel scrub ensures reduced coolant usage, while Intelligent, programmable eco modes minimise energy consumption.

Holroyd Profile Management System (HPMS)

Integrated as standard with the HG500, our industry leading Holroyd Profile Management System (HPMS) comprises a suite of advanced programs that enable the straightforward manipulation and analysis of profiles for PTG Holroyd rotor grinding machines. HPMS is used in the development and control of a wide range of helical profiles for screw rotors, vacuum and pump screws. HPMS can also be used to assist the control of a profile during the production stages and optimisation of operating meshing conditions.

• Industry leading profile management tool
• Automatic, in-cycle profile updates and dresser path corrections
• In-process lead and profile measurement
• CBN wheel adjustment and correction