What an E-volution! - Full OEM rebuild brings advanced performance


Built to last: an original Holroyd 2E-volution CNC rotor milling machine, pictured when new.

Full OEM rebuild to bring advanced performance and siemens’ control to 1990’s Holroyd rotor miller.

For one of Germany’s most respected compression equipment specialists, the opportunity to purchase a previously owned PTG Holroyd 2E-volution CNC rotor milling machine from its Rochdale-based manufacturer was simply too good to miss. 

That’s because before being shipped to Germany, the machine will undergo a full refurbishment and upgrade programme, during which it will be transformed into a state-of-the-art ‘new’ PTG Holroyd 2E-volution rotor production centre. 

Looking to expand its screw manufacturing capability, and enjoying reliable, trouble-free operation from its fleet of current PTG Holroyd rotor milling machines, the organisation in question is buying the older model in complete confidence.   

Manufactured in 1993, the PTG Holroyd 2E-volution rotor miller (for manufacturing helical rotors of 200 mm maximum O/D) is currently at PTG Holroyd’s machine tool technology centre where, after a complete overhaul and full mechanical refit using genuine Holroyd components, it will also benefit from the integration of Siemens’ future-proof SINUMERIK ONE CNC control. Rebadged as a PTG Holroyd 2E-volution rotor production centre, it will provide rapid setup, intuitive user-friendly operation and the latest levels of accuracy, reliability and productivity.

“The sheer number of older PTG Holroyd 2E-volution machines still in daily use around the globe says a great deal about their quality and longevity, as well as the faith our customers place in them,” comments PTG Holroyd sales director, Mark Curran. “In fact, many of our customers have requested a full retrofit and upgrade to bring performance up to current day standards.

“The SINUMERIK ONE upgrade alone will provide our German customer with Siemens’ incredible ‘Run MyVirtual Machine’ capability, meaning they will be able to mill virtual rotors on the desktop before commencing physical production. The risk of legacy software issues going forward will also be reduced. PTG Holroyd machines are built to last, and an E-volution upgrade, which is suitable for many of our older CNC milling machines, enables customers to update their machine tools and gain the accuracy and performance of a current model at much lower cost than purchasing new.” 

The PTG Holroyd E-volution rotor milling machine upgrade programme includes:

  • Full refurbishment and refit with genuine Holroyd parts 
  • Siemens’ SINUMERIK ONE future-proof CNC
  • The latest, fully enclosed machine guarding
  • Comprehensive 12-month warranty
  • Optional service or planned preventive maintenance package

PTG. The first name in precision

Incorporating the brands of PTG Holroyd, PTG PowerstirÒ Friction Stir Welding and Holroyd Precision Rotors, PTG has established itself at the forefront of high-precision machine tool design, build and supply for specialised applications. The range includes advanced machine tools for the production of complex helical components such as compressor rotors, pump screws and high-accuracy gears, and PowerstirÒ machine tools for friction stir welding advanced alloys used in transport applications. With production facilities in the UK, USA and China, Holroyd Precision Rotors manufactures the special purpose, ultra-precision helical components used in a wide range of industries, including refrigeration, air-conditioning, gas and vacuum pumping, industrial air handling, aerospace, medical equipment, motion control, power transmission, power generation, oil & gas, fluid transfer and high-end automotive. PTG also provides advanced technical consulting services.




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