Always in good shape

The shaping of metal has always been the driving force behind the work of Hammerwerk Erft and its employees. The ability to produce excellent forgings in a cost-optimised, reliable and fast manner is what distinguishes us. As a medium-sized, family owned business, we act by tradition close to our customers and their needs, always with a high quality standard in the focus of our actions.

Mastering forces

When highly stressed components are used, forgings are the first choice. The properties of the products are tailored to the customers' needs through a targeted combination of material, (3D) forging technology and heat treatment. With its products, Hammerwerk Erft contributes to the energy transformation and sustainably shapes the world of tomorrow.

Our business fields

Our forgings are as diverse as their areas of application. You will find that our products are used across the world!

Gear manufacturing
Heavy machinery
Wind power
Power generation

A forging tradition for over 400 years

We distinguish ourselves on knowing the requirements and wishes of our customers and providing solutions based on our decades of experience. One of the many pillars of the HWE quality seal is to rise above challenges in a way that is geared to finding solutions, in order to offer a product that is optimised in terms of performance and cost. With the help of our flexible manufacturing capabilities and advanced computer-aided production planning, we are fully capable of meeting special requests at any time, even in terms of delivery dates or design.

The quality gene

After the foundation of our company in 1950, we commenced production in 1951. The more than 400 years of experience of the Diederichs family in the forging industry acted as a solid foundation. At the beginning, the production team consisted of six people. The number and capacity of the forging units steadily grew, the company premises were extended and new factory halls and administration buildings were built. In order to expand the product range and increase the vertical range of manufacture, investments were made in ring rolling mills, heat treatment facilities, mechanical processing machines and quality assurance in addition to the traditional forging units. The consistent focus on quality improvement and error minimization led to Hammerwerk Erft being the first non-corporate open-die forge in Germany to be certified according to DIN/ISO 9002 - EN 9002 as early as 1991.

Ideal investment

Hammerwerk Erft continuously invests in equipment, machinery, logistics, processes and personnel. At our site in Bad Münstereifel, we have a top-class production facility in terms of technology and organisation. Our digitalised processes fit perfectly into the procurement and logistics processes of our customers

Forgings for the most demanding requirements

Finding custom-made solutions for demanding tasks has always been a hallmark of our company. The success of our customers also represents our success and is made possible by the professionalism and commitment of our employees, a tradition that has been practised for generations. Working together as equals makes us the reliable and sustainable partner of today and tomorrow.

Marc Schmitz - Managing Director

Recycled steel Recycled steel

Did you know that at Hammerwerk Erft we use almost 100% recycled steel? A significant part of our products is used in the field of renewable energy production, such as wind turbines and hydropower.


Hammerwerk Erft is a family business with more than four centuries of experience in the field of forging and we embrace the daily challenges of a continually changing environment. We pay attention to a careful treatment of our environment and take responsibility by realizing economic and ecological goals. The continuous improvement of our products, manufacturing processes and environmental standards is a top priority for us. Environmental protection and energy efficiency are therefore part of our corporate policy and we work on optimising energy processes every day. We have been committed to sustainability and the prudent use of resources for decades. To this end, we have already implemented various measures, such as the modernisation of furnaces and the installation of photovoltaic systems.


Here you can find our digital company brochure.

Would you like to find out more? Feel free to talk to any of our employees.
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