6 Ausgabe 6/7–2024 HYDRAULIK INFORMATION: STAUFF Deutschland Walter Stauffenberg GmbH & Co. KG Im Ehrenfeld 4 D-58791 Werdohl Tel.: +49/23 92/916 0 Fax: +49/23 92/916 103 marketing@stauff.com www.stauff.com Connectors with soft-sealing cutting rings are particularly insensitive to vibrations, pressure peaks, and pressure shocks. Product update: portable cutting ring assembly machine André Degen knows the pressure relief that a mobile assembly unit provides for personnel: “Time and time again, hydraulic line systems are only completed when they arrive at the end customer, and maintenance and repair work is generally also done at the place of use, for instance on site. Not having to forego the benefits of mechanical pre-assembly reduces the risk of assembly errors and helps to reliably prevent leaks – regardless of the installation site.” A portable cutting ring assembly machine has been part of the Stauff product range from the start. This product update, which was launched in April 2024, optimises multiple steps in the assembly process, including the angle of rotation: in pre-assembly, the cutting ring is assembled to 270° once the pressure point has been reached. There is approx. 80% raised material in front of the first cut, with the result that final assembly only needs 90° final tightening. “It is beneficial only having to turn the wrench a quarterturn, especially in tight spaces or when working overhead,” explains André Degen based on his experience. Electronic pressure setting is also new, which guarantees excellent precision “at the touch of a button”. Over 200 assembly processes can be done with a single battery charge. A spare battery and charger are included in the set. This lightweight and ergonomically designed assembly machine is supplied in a sturdy trolley with space for all components. Other accessories, such as fasteners for operation on a table top or on the tripod supplied, along with a shoulder strap are supplied. All the necessary parameters for tube diameters of 6 to 42 mm (Light Series) and 6 to 38 mm (Heavy Series) in steel and stainless steel are supplied. “Customers feel well looked after!” It is not just customers who feel safe when it comes to the leak-tightness of hydraulic line systems, thanks to Stauff’s practical customer care and support. Assembly personnel can also be sure that they are doing everything right from the outset. André Degen himself can look back on 20 years of experience, during which time he worked for renowned machine and plant manufacturers worldwide, installing, testing and putting into operation stationary systems at customers’ premises. “I have personally experienced how important every step is for the proper functioning and operation of the entire system. I can explain to a fitter the consequences that the underassembly of a tube connector will have for the entire system – and then show them how they should assembly it correctly and close any safety gaps that could lead to time-intensive and costly machine outages and environmental pollution.” “Purely metallic” or “soft-sealing”? Stauff cutting ring fittings are suitable for nominal pressures of up to 500 bar in the Light Series and up to 800 bar in the Heavy Series in accordance with ISO 8434-1/DIN 2353 on metric tube ends with outside diameters of between 6 mm and 42 mm. Alongside its pure metallic cutting rings, Stauff also supplies the FI-WDDS range with two FKM (Viton®) soft seals positioned to remain in place. These soft-sealing cutting rings also secure the connectors against the risk of leaks, such as, for instance, by the “settling” of purely metallically sealed connectors caused by temperature fluctuations or serious pressure peaks and vibration loads in the system. It also rules out “sweating effects” on the connecting points. Connectors with softsealing cutting rings are particularly insensitive to vibrations and resist pressure peaks and pressure shocks, as are caused in mobile equipment, such as construction and agricultural machines. However, they are also recommended for use in stationary industrial machines and production systems in heavy industry or in shipbuilding. The cutting rings themselves are supplied in steel and stainless steel, and all the steel products in the StauffConnect range feature a high-quality Stauff zinc/nickel coating. With over 1,200 hours of resistance to red rust / base metal corrosion in the salt spray chamber, according to DIN EN ISO 9227, this offers reliable corrosion protection far beyond the usual market standard. Even after transportation, processing and installation of the components, the requirements defined in the VDMA standard sheet 24576 for tube connectors for the highest corrosion protection class K5 are significantly exceeded.
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