Our History

A Pedigree of Innovation, Excellence and Expertise

The Holroyd story began in 1860 when our founder, John Holroyd, opened a machine tool and textile machinery manufacturing business in Manchester, UK.

By 1897, he had invented the thread milling process and patented the first machine of its kind.  A year later, ‘John Holroyd & Co.’ moved into much larger premises in Rochdale, Greater Manchester – a town that remains home to our global headquarters to this day.

The innovations kept rolling off the production line. Worm gears were produced, along with thread milling and grinding machines.

1920 saw Holroyd develop the first spuncast Super-Holfos (Holroyd Phosphor) and JH17 (John Holroyd 17) Bronze – offering high strength and an extremely low coefficient of friction. Then, in 1931, the company set the – still unbroken – world record for worm gear efficiency at 98.2% at the UK’s National Physical Laboratory.

From the day it was formed, John Holroyd & Co. pioneered ground-breaking technologies for the design and manufacture of highly complex helical components.

Today, as Precision Technologies Group, we innovate, inspire and strive to develop better, more efficient technologies for customers globally. We are proud recipients of four Queen’s Awards and export no fewer than 98% of our products, with our largest markets being the USA, China and Germany.



PTG celebrates 160 years of trading.


PTG Holroyd is Platinum Sponsor of the International Conference on Compressors and their Systems. (We have sponsored this biennial event since it was first held in 1999!)


PTG Holroyd is named as a Northern Powerhouse Export Champion by The Department for International Trade.

PTG Holroyd Precision Rotors sponsors TU Dortmund University’s International Conference on Screw Machines.


PTG’s Chief Executive Officer, Dr Tony Bannan, receives OBE from HRH The Prince of Wales.


PTG’s Chief Executive Officer, Dr Tony Bannan, is appointed an Officer of the Order of the British Empire in the Queen’s 90th Birthday Honours List.
PTG Friction Stir Welding advances the development of FSW technologies for use in battery-electric and plug-in hybrid electric vehicle manufacturing.


PTG Holroyd receives the Queen’s Award for Enterprise: International Trade.


PTG is identified as ‘one of twenty up and coming medium-sized subsidiaries of foreign companies – and significant investment pledges made by foreign corporates’ – in the inaugural Sunday Times PA Consulting Inward Investment Track.

PTG receives the Greater China Business Award for the North West of England in recognition of its significant contribution in developing business and network links with Greater China, including bi-lateral trade and investment.


PTG’s Dr Christopher Holmes is made an Honorary Visiting Professor by City, University of London. The appointment is in recognition of Chris’s work in the field of screw rotor behaviour, metrology, design and manufacture.


PTG is runner-up in the UKTI/Finnair North West England Greater China Business Awards 2012.


PTG becomes part of Chongqing Machinery & Electric Co. Ltd. (CQME), a large Chinese industrial group listed on the Hong Kong Stock Exchange. Since acquisition, CQME has invested heavily in PTG, allowing a considerable proportion of profits to be used for the development of new products and markets, as well as for investment in R&D, training and skills.

The Precision Technologies Group (PTG) name is officially adopted, bringing together all aspects of Holroyd’s activities under one technology focused banner.

earlier awards, events and achievements


Holroyd wins the Queen’s Award to Industry: for Innovation in the field of thread & gear grinding technology.


The Powerstir range of friction stir welding machines is launched – and quickly becomes recognised as a leading name in FSW technologies.


Holroyd receives high commendations in the ‘Exporter of the Year’ category in the Manufacturing Industry Achievement Awards.

Holroyd is a finalist in the Machinery Awards ‘Most Innovative Application of New Capital Equipment’ category and the ‘Most Innovative Application of Computer Technology in Support of Production’ category.


Holroyd is a winner in the ‘Innovation of the Year’ category in the Manufacturing Industry Achievement Awards.


John Holroyd & Company receives the Queen’s Award for Technological Achievement, for its advanced rotor cutter-grinding machines.


John Holroyd & Company receives the Queen’s Award for Technological Innovation.


Holroyd Precision Rotors is established as the sub-contract manufacturing division of John Holroyd & Company.


John Holroyd becomes the world record holder for worm gear efficiency.


John Holroyd develops the first spuncast Super-Holfos and JH17 Bronze.


The production of worm gears, thread milling and grinding machines begins.


John Holroyd & Company invents the thread milling process and patents the first machine of its kind.


John Holroyd & Company is established in Manchester, UK.

Part of the CQME Group
of Companies.

Absolute Precision Makes All the Difference.

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