• American Gear Manufacturers Association: Represents the interests of international gear manufacturers, consultants and suppliers to the industry. Information on gear design, manufacture and application.
  • British Gear Association: The British Gear Association (BGA) is a trade association that promotes the technical and commercial interests of manufacturers, distributors, academics and others involved in the Power Transmissions industry in the United Kingdom.
  • Convoloid
  • GTMA: The GTMA is an established UK trade association representing companies throughout the engineering supply chain.
  • Machine Tools: CNC Machinery and Machine Tools for sale from UK Suppliers
  • Newcastle University Design Unit: Design Unit is a specialist outreach centre with expertise in design, development and research consultancy for Mechanical Power Transmission Systems