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The name VMA represents a wealth of knowledge and many years of experience in the field of drive technology.
All of our products are made according to our own patented designs, without exception.
Throughout its 29-year history, VMA has registered as many as 20 national and international patents. The products have been perfected by working in cooperation with various universities and pursuing a continuous quality management strategy.
Not only have the products undergone practical stress tests (e.g., on test facilities at Würzburg-Schweinfurt University of Applied Sciences), but theoretical applications have been carefully examined using the finite element method and proprietary simulation programs. In this way, nothing is left to chance.
Our many years of experience and customer-focused approach to solution management make us a highly competent company that is able to provide a fast and professional response.
VMA – Inventor, market leader, and the right partner for your business.

Our company a+s vertriebs gmbh Hamburg was founded in 1978 as a service partner for freewheels, backstops and overrunning couplings by Stieber. Since that time we evolved into a worldwide acting specialist for power transmission. Our assortment consists of more than 6.000 different products, all by well-known manufacturers from Germany, Europe and the US.
As a traditional family business our standards are integrety, trust, veracity and most of all for outstanding customer service. With that we enable our long-term business partners to perform better and increase their reputation as well as their market share.

CoupTec Kupplungstechnik GmbH is a
dynamic and aspiring company in the fields of torque transmission and
drive technology, based in the Rhine-Main area. CoupTec was founded in
2014 by Peter Wadel and two other partners. Peter Wadel has been active
in this specialist field since the early 1990s and, thanks to his many
years of experience and passion for coupling construction, is the
guarantor of the high quality and reliability of product.

ISO 9001 Certified Company

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We develop, produce and sell
precision safety couplings, elastomer couplings as well as bellow
couplings in Europe, Asia and Amerika.

These couplings are used in drive technology, automation, robot
construction as well as general tool and machine construction and
therefore require high quality, precision and durability.

Since 2020, our company has been certified according to DIN EN ISO
9001:2015, so that all production steps are continuously monitored and
optimised to ensure high product quality.

In 2023, we expanded our product range to include grooving work and
now also offer keyway work / contract keyways and keyways in accordance
with DIN 6885.