Indestructible: Stauff and Voswinkel components in agriculture

(Werdohl, September 2017)

Indestructible: Stauff and Voswinkel components in agriculture

Superior resistance to aggressive substances

The use of components in agricultural machinery places high demands on the corrosion resistance of hydraulic line components, such as tube and hose connections and fasteners. They are not just exposed to usual weather and climate-related hazards, but frequently come into contact with particularly aggressive substances: with fertilizers containing phosphate or nitrogen, pesticides, cleaning concentrates, oils and other media. 

Stauff, one of the leading manufacturers of line components and hydraulic accessories, based in Werdohl/Germany, has been using a zinc/nickel surface coating for steel components for over ten years, which offers extremely good protection against red rust or base metal corrosion, even compared to other manufacturers’ zinc/nickel coatings. A large proportion of the product range is produced as standard with the chromium VI-free zinc/nickel surface coating, also including the company’s own Stauff Connect tube connectors range and Voswinkel hose connectors.

In-house test chamber for all hazardous substances

The coating offers over 1,200 hours of resistance to red rust / base metal corrosion under practical test conditions in the salt spray chamber in line with DIN EN ISO 9227. It therefore exceeds the most demanding requirements, as defined in the VDMA Standard Sheet 24576. However, there are no other general standards or cross-vendor regulations, for instance governing fertilizer resistance. According to Thomas Butzki, Head of the Test Laboratory in the Stauff Technology Centre in Werdohl: “For us as a manufacturer of quality components, the salt spray chamber test is inadequate as the sole comparable criterion.” Stauff and Voswinkel components with a zinc/nickel coating are exposed to aggressive media, such as hydraulic, lubrication and engine oils, fuels, coolants, brake fluids etc., in a test rig specifically developed to determine the resistance of materials and coatings. “We also offer the manufacturers of agricultural machinery the opportunity to individually test our products with fertilizers, pesticides, cleaning concentrates and other media. The assessment of our zinc/nickel coating can be proved and its resistance objectively demonstrated by means of clearly defined and practical conditions and time periods accompanied by appropriate documentation,” concludes Thomas Butzki.

Image 1:

The zinc-nickel surface coating developed by Stauff – shown here on products from the Stauff Line range – has proved itself in practice in agriculture
(Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Image 2:

The test department with its built-in extraction system enables tests to be carried out using the most diverse media, into which the components are immersed for a shorter or longer period of time
(Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Background Information

For more than 50 years now, the Stauff Group with headquarters in Werdohl (Germany) has been successful in the development, manufacturing and distribution of pipework equipment and hydraulic components for mechanical and plant engineering as well as for service and industrial maintenance. The overall product range currently includes about 33,000 standard products as well as numerous special and system solutions according to customer requirements or based on own developments.

Wholly-owned manufacturing, sales and service facilities with more than 1,150 employees in 18 countries and a tight network of authorised distributors and representatives in all major industrial regions of the world ensure high presence and service paired with a maximum of availability.

In April 2015, Voswinkel was acquired and became a member of the Stauff Group. With two sites located in Meinerzhagen (Germany) and 230 employees, Voswinkel is considered to be one of the world's five largest producers of quick release couplings for hydraulic systems. The long-established company also develops and produces a comprehensive range of hydraulic hose fittings – particularly for high-pressure applications – as well as custom-designed piping, primarily for construction and agricultural machinery as well as for commercial vehicles.

In 2015, the companies of the Stauff Group have generated external sales revenue totalling EUR 230 Mio.

Press Contact

Mr Boris Mette
Head of Marketing Communications
Tel.: +49 (0) 2392 / 916-154
Fax: +49 (0) 2392 / 916-270154
E-Mail: b.mette@stauff.com