SAF 112.22€ +0.56% Worldwide Companies EN Login GROUP PRODUCTS & SERVICES CAREERS FINANCE NEWS & MEDIA Safran Transmission Systems The world leader in mechanical power transmission systems Safran Transmission Systems is the world leader in mechanical power transmission systems for commercial and military aircraft. With over 45,000 products delivered to date, the company holds 60% of the global market for mainline commercial jets (over 100 seats). OUR EXPERTISE Accessory drive trains for aircraft engines The accessory drive train (ADT) is a mechanical assembly comprising a system of gears and shafts that taps some of the engine’s power and transfers it to the key subsystems and equipment that help keep the engine (oil system, fuel system, electrics) and the aircraft (electric and hydraulic systems) performing as they should. Aircraft-mounted accessory gearboxes The aircraft-mounted accessory gearbox drives the equipment that generates the electrical power needed by airplane and helicopter systems. Reduction gearboxes for airplane and helicopter engines The reduction gearbox is a major module in the propulsion system and is part of the drivetrain between the gas generator and the propeller. It lowers the rotation speed between the engine output and the main propellor gearbox, while transmitting all of the engine’s mechanical power. Research and technology Our engineers and technicians design and develop breakthrough technologies and the next-generation power transmission architectures that will help make flying greener. Materials and processes Our mechanical power transmission systems are constantly being improved with the introduction of new materials and processes, such as machining from solid and additive manufacturing. Design Our teams use computer-aided mechanical design tools and 3D modeling to design and develop technical solutions to meet the evolving requirements of engine manufacturers. Prototyping To develop the maturity and robustness of the new technologies designed and developed by our teams, they build prototypes to test these major innovations. Testing Our testing center reflects our commitment to ensure that the development of new power transmission technologies and architectures includes rigorous altitude and endurance testing. Production engineering Our teams implement and manage robust manufacturing processes in order to meet the cost, quality and on-time delivery requirements of our customers. Manufacture and assembly Building on the experience gained with more than 45,000 ADTs, our expertise spans all aspects of gear production, and we offer different procedures for manufacturing casings, from casting to solid machining. Services and support As an original equipment manufacturer (OEM), we offer specific repair solutions to meet the needs of each customer, from parts supply to by-the-hour support contracts. OUR PRODUCTS, SERVICES, SUPPORTS AND OFFERS Product LEAP-1A power transmission system Mechanical power transmissions Product LEAP-1B power transmission system Mechanical power transmissions Product LEAP-1C power transmission system Mechanical power transmissions SEE ALL Safran Transmission Systems in Poland, a key link in the chain of Safran’s engineering expertise Safran Transmission Systems Poland specializes in the production and assembly of major modules for aircraft engines, including the power transmission systems for the Boeing 737 and Airbus A320. The company actively contributes to the success of the CFM56 and LEAP programs. Working closely with the Technical University of Rzeszow, Safran Transmission Systems Poland is a dynamic company focused on continuous improvement. The company’s on-time delivery and quality performance earns regular kudos from its customers, and it has established its reputation within Safran and “Aviation Valley”, a region of southeast Poland known for its engineering know-how. Aero Gearbox International Formed in 2015, Aero Gearbox International brings together the expertise and experience of its two parent companies: Safran Transmission Systems in the design, production and maintenance of mechanical power transmission systems, and Rolls-Royce for aircraft engines and systems integration. Based on a 25-year, renewable partnership, the company is the exclusive supplier of these systems for all future commercial aircraft engines made by Rolls-Royce. One of the joint venture’s first products was the accessory drive train for the Trent 7000 engine powering the Airbus A330neo. It has facilities in Colombes (near Paris), Derby (UK), Dahlewitz (Germany) and Ropczyce (Poland). Focus on innovation: additive manufacturing Additive manufacturing is an alternative to the traditional casting process. Instead of removing material by machining, it involves adding only the necessary material. Safran Transmission Systems designs gears and cases using the selective laser melting (SLM) method. Also known as 3D printing, additive manufacturing is a real innovation driver and offers a number of advantages: it helps overcome design constraints in order to reduce weight and decrease the number of constituent parts, which in turn lowers production costs. And because part design is entirely digital, right through to printing, we can make prototypes much faster. Focus on innovation: reduction gearboxes With our experience in propeller speed reduction units for turboprop engines and our overall expertise in propulsion systems, Safran Transmission Systems has naturally begun developing the high-power reduction gearboxes for the next generation of very-high-bypass-ratio engines. A multidisciplinary team of over 100 engineers and technicians is designing and developing the breakthrough technologies for these future gearboxes. Safran Transmission Systems also operates an experimental production center and a test facility where we develop, produce and trial these new technologies and the various potential architectures to bring the best possible solutions to market. Our rating on gender equality 0 / 100 Criteria 1. Comparison of the percentage of men and women having received a raise. 2. Difference in average salary between men and women. 3. Comparison of the percentage of men and women having received a promotion. 4. Whether all women received a raise on returning from a maternity/adoption leave. 5. Number of women in the top 10 paying positions. According to the French law of September 5, 2018, and its application decree of January 8, 2019, on "Freedom to choose your professional future" (Liberté de choisir son avenir professionnel), companies have to measure five gender equality indicators and publish their overall score. The primary aim of this law is to eliminate compensation discrepancies between men and women. JOB OPENINGS Join Safran Transmission Systems and take a look at our 62 positions 11.23.2021 R&D TECHNICAL DIRECTION Apprenti(e) - Assistant chef de projet - Transformation Numérique Apprenticeship Colombes Cedex, France 11.23.2021 INDUSTRIAL ENGINEERING Apprenti(e) - Technicien Procédés en Programmation Contrôle H/F Apprenticeship Colombes Cedex, France 11.23.2021 INDUSTRIAL ENGINEERING Apprenti(e) - Transformation Digitale: DNC / Supervision / Meds H/F Apprenticeship Colombes Cedex, France SEE ALL SAFRAN TRANSMISSION SYSTEMS SEARCH OUR CERTIFICATIONS AND APPROVALS AQAP 2110 D - Safran Transmission Systems DOWNLOAD (PDF, 0.29MB) CAAC 145 – Safran Transmission Systems DOWNLOAD (PDF, 1.82MB) Certificate chemical processing Safran Transmission Systems DOWNLOAD (PDF, 0.35MB) Certificate heat treatment Safran Transmission Systems DOWNLOAD (PDF, 0.33MB) See all 60 % market share for commercial jets with over 100 seats 10 % of revenues invested in R&D 45,000 power transmission systems delivered 1 billion flight-hours with our power transmission systems 1,900 airlines and operators use our equipment 544 patents worldwide LATEST NEWS 05.19.2021 HUMAN RESOURCES Frédéric, R&T Engineer at Safran Transmission Systems 04.15.2021 BUSINESS Hector : Technical Leader at Aero Gearbox International 03.03.2021 BUSINESS Nomination of Sandra Bernard as Director of Continuous Improvement & Information Systems SEE ALL LATEST PRESS RELEASES 12.16.2019 BUSINESS Safran announces construction of a new Research and Development Center for aircraft transmission systems 07.08.2019 CORPORATE Safran to build new aircraft carbon brake plant near Lyon 07.02.2019 BUSINESS Safran accelerates the development of modeling tools for contact mechanics applications SEE ALL Any questions about Safran Transmission Systems? CONTACT US Credits Follow us Contact us Sitemap Privacy notice Legal notice FAQ Privacy settings Privacy settings By clicking “Accept All Cookies” you agree to the storing of necessary cookies to enhance navigation and to make our site work. We also set optional analytics cookies (including third party cookies) to help us improve the site and enhance your user experience by analysing your usage of the site. More info Safran Video Library These cookies are necessary for the website to function and cannot be switched off in our systems. Always active Google Analytics These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. Youtube These cookies allow you to watch Youtube videos. SAVE PREFERENCES ACCEPT ALL COOKIES WITHDRAW CONSENT