A recently developed dual-purpose CNC rotor milling machine from PTG Holroyd is all set to revolutionise the manufacturing capabilities of a leading German maker of compressed air, gas and vacuum technologies. Currently in build at PTG Holroyd’s Rochdale-based machine tool technology centre, the machine, a PTG-Holroyd 4EX-R-BL (BL = blower) model, will be used to precision-mill both helical rotors and Roots-type blower air ends.

One of the world’s leading manufacturers of refrigeration and air compressors has ordered a new PTG Holroyd CS700 tool management centre. The machine tool, which is currently in build at PTG Holroyd’s UK-based technology centre, will be shipped to one of the compressor manufacturer’s facilities in China’s Jiangsu province early next year.

One of North America’s premier rotary screw compressor manufacturers has ordered a new, ultra-precise TG 350E CNC rotor grinding machine from UK-based PTG Holroyd.

Stand 5L07 27 – 29 September 2022 Exhibition Centre, Düsseldorf UK-based Precision Technologies Group (PTG) will be showcasing its range of Powerstir dual weld-head friction stir welding (FSW) machines at Aluminium 2022.

The first of PTG Holroyd’s newly developed HG350 advanced gear and worm gear grinding centres are currently undergoing factory acceptance testing at the company’s Rochdale-based technology centre, in preparation for shipping to customers.

One of the world’s leading air compressor machinery specialists has ordered what will be its seventeenth EX Series rotor milling machine from UK-based PTG Holroyd. Scheduled for build at PTG-Holroyd’s Rochdale-based technology centre later this year, the machine, a 3EX-R model, will be installed at one of the air compressor company’s North American manufacturing facilities. Able to rough mill rotor blanks of up to 350 mm in diameter, it will be used to produce rotors for portable and stationary air compressors.

A leading Chinese manufacturer of industrial refrigeration compressors has chosen a British-built PTG Holroyd TG Series CNC rotor grinding machine to bring even higher levels of accuracy and speed to its manufacturing strategies.

The 12th biennial International Conference on Compressors and Their Systems, which took place at City, University of London in September 2021, included a fascinating joint industry presentation by Professor Christopher Holmes of PTG Holroyd and Jack Sauls (retired), formerly of Trane.

Just two years after the launch of its range of Powerstir ‘dual weld-head’ friction stir welding machines, UK-based Precision Technologies Group (PTG) reports achieving double-digit sales of these specially developed FSW technologies for electric vehicle OEMs.

Delroyd Worm Gear, the North American manufacturer of precision worm gear drives and a part of Nuttall Gear, a business unit of Altra Industrial Motion, has placed an order for one of PTG-Holroyd’s newly launched HG350-WG worm gear and gear grinding centres. Scheduled for installation in summer 2022, this will be the first of UK-based PTG Holroyd’s new HG350-WG machines to be purchased by an overseas customer.