Lift. Secure. Convey.
“Chains must be safe - this is a basic prerequisite and a question of trust - or better still, of certainty. In addition we offer you complete transparency.“
Max Röttgers, Managing Director
Quality brand since 1919
Röttgers Ketten has been a recognised manufacturer of quality chains since 1919. From the abbreviation of the company founder August Röttgers, the brand name aRö developed into a byword for chains of the highest quality. At its location in Iserlohn in North Rhine-Westphalia, the family-owned company manufactures conveyor chains, slaughterhouse chains, sling chains, pump chains, hoist chains, anchor chains, lock chains and chains for playgrounds on the latest generation of fully automatic systems. A total of 2 million metres of chains leave the Iserlohn production facility in the Sauerland region every year.
All hoist chains, sling chains and corresponding accessories are tested, certified and carry the H-test stamp as proof of quality according to DIN 685. Our customers trust the special quality of our products and the reliability of the chains’ performance. We are your specialist manufacturer of choice for chains made of stainless steel when it comes to the need for durability and corrosion resistance. Röttgers Ketten is entitled to carry the international stainless steel trademark “Edelstahl Rostfrei” which first came into existence in 1958. Non-corroding stainless steel and rust-proof stainless steel have a chromium content of at least 10.5 %. Non-corroding is not the same as never corroding. In aggressive environmental conditions, stainless steel will also oxidise (rust). The French term INOX (inoxydable = non-corroding) is derived from the term oxidising. The term stainless steel alone is not to be equated with non-corroding stainless steel. It only designates steels of special purity. Terms such as V2A, V4A and Nirosta are brand names of companies.
Heat treatment is a process for the treatment of materials by thermal or thermochemical action. The aim is to achieve optimised properties for a specific application or purpose. We operate our modern and fully automatic Cieffe multi-purpose chamber furnace line 24 hours a day, 7 days a week. The dimensions of the furnace chamber are 1,170 x 720 x 700 mm (WxHxD) and hardness batches up to a weight of 1,000 kg can be treated.Heat treatment processes applied
- quenching and tempering
- soft annealing
- recrystallisation annealing
- stress-relief annealing
All heat treatment processes are carried out in a chamber furnace under inert gas atmosphere with appropriate C-level control. It goes without saying that our employees have many years of experience in modern heat treatment.
The heat treatment process is permanently controlled by a CO measuring device, additionally monitored by foil samples and, of course, documented.
Our flexible, technical setup also allows blasting and partial cleaning within the scope of the following parameters:
- Container with dimensions of: 80-100 cm (length) x 60-80 cm (width) x 40-60 cm (height)
- Gross weight: Maximum 400 kg
- Maximum length of a blank: 300 mm (in exceptional cases up to 350 mm length is possible)
- The maximum piece weight is: approx. 7 kg
Röttgers Ketten has been ISO 9001 certified since 1998. The ISO 9001 certificate confirms that all internal company processes comply with the international standard for quality management systems. It also underlines our dedication to customer satisfaction and our commitment to quality. Our quality management system is based on conviction and a sense of responsibility, all at the highest standards.
To meet the high demands placed on our products, we take quality assurance measures that are oriented to the high standards of the industry. This also means that we as a company are committed to a continuous, sustainable improvement process. This can be seen in the attitude of all our employees.. and can be reflected in all our company activities. The continuous improvement process relates to our process, product and service quality and is an essential and indispensable component of our quality management system. The traceability and assignment of relevant products and documentation is a matter of course for a functioning quality management system. In the area of round steel chains for lifting purposes, the Machinery Directive 2006/42/EC, which among other things regulates a uniform level of protection against accidents for machinery within the European Economic Area (EEA), also applies.
Qualified employees and our state-of-the-art quality assurance laboratory play a major role in our self-monitoring and thus make a special contribution to our process reliability:
- through the preparation of tensile specimens
- through tensile tests up to 400 kN
- through preparations
- through hardness tests
- through corrosion tests
- as well as through microscopy including conclusive evaluations
Do you have any questions about our products?
Our team is at your disposal for further information and can be reached at the following numbers +49 2374 9794-18 / -19 / -39. We look forward to hearing from you!