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For more than forty years we have been manufacturing protective systems for the world's machinery building sectors. Our first products were bellows and coil springs that we produced in Seligenstadt, which is still our head office today. Through consistent further development we expanded our production to several sites in Germany and abroad for most efficient service to our customers worldwide.
Protection and window systems
Through a consistent development of our first range of products - bellows for the protection of linear guides - we engineered the SAMURAI range of product, lamella protected bellows and aprons and also complete backwall systems.
In addition to spiral springs other products such as telescopic steel covers, roller systems, machine safety windows.
VISIPORT® Spin windows and LED lighting systems complete our range of offers.
Clamping and Braking Systems
Within the last ten years we also enlarged our second sphere of competence which new includes pneumatic and electromagnetic clamping and braking systems and also manual and mechanical clamping systems.
Research and Development
This product diversity is possible only with extensive research and development as well as intensive detailed work. In close collaboration with external institutes developments and structures are tested for their practicability and extreme situations simulated so that our products can also fulfil the high requirements in the field.
Quality
Our own product and process quality is verified by regular certification procedures: all of our European production locations have been awarded DIN ISO 9001:2015 certifications. Kaizen teams at all works contribute towards continuous improvement.
Innovation never ends - in this spirit we will keep on working on innovations and improvements for our customers.

Your Specialist for Industrial Damping Technology
Since mid 2016, ACE has officially been a member of Stabilus S.A., one of the world's leading manufacturers of gas springs, electromechanical drives and dampers. Founded in 1963, ACE introduced the first adjustable industrial shock absorber. Over 50 years later, ACE is the internationally recognized expert in the field of industrial damping technology. The company’s portfolio now includes automation control, motion control, vibration control and safety products.
ACE’s experienced, local support team is focused on finding the right solution for each customer - worldwide. The company’s products are everywhere, from the bottom of the ocean to the sky above, and anywhere an accurate deceleration or force support or vibration control is needed. ACE is headquartered in Langenfeld, Germany (Marketing and Sales) and in Farmington Hills, Michigan (Engineering and Operations), with 5 branches and 4 production facilities worldwide as well as representative offices in 45 countries on all continents.
ACE is well recognized as the global leader in industrial absorption technology and with a strong belief in local support, available worldwide, has grown adistribution and supply network able to engineer and support in all the industrial nations around the world. With over one hundred and twenty stocking distributors located in over forty five different countries, manufacturing on three continents and a commitment to innovation and development ACE is available to help you, wherever you are.
The ACE international team comprises of fully trained, well respected local distributors each serving a local community, supported by the ACE international staff of senior engineers and designers able to advise and customize equipment to each companies specific requirement. Our international support is enhanced by multi-lingual staff, high levels of stock held in all locations and the ability to respond rapidly to even the most complex technical questions. Over forty years of experience in the industrial deceleration field and the successful cooperation with some of the most prestigious engineering establishments and universities has given ACE the ability to develop complex simulation programmes proven time and again to be correct on live projects. These features are available to you, if you need just one small part or are developing a complete new range of products.
ACE - WHEN PERFORMANCE MATTERS

Safety solutions for linear motion in mechanical engineering
SITEMA is the only company worldwide specializing in the development and production of clamping units and linear brakes acting on round rods. The deliberate focus on these often safety relevant products makes SITEMA a competent realistic and powerfull system provider with a wide range of products that offer the optimum solution for every application.
With the experience that comes from more than 160‘000 clamping units
Following its foundation in 1979, SITEMA developed the first system worldwide generating the necessary high braking forces directly at the surface of the lifting cylinder shaft. This new technology formed the basis for perfecting clamping devices for a wide range of tasks. Then as now, our watchword is: absolute functional safety.