fluid · 04 2024 15 Hydraulics Marcel de Bruin turned to the Dutch Stauff-Line system partner JB Hydraulics in his search for an equally reliable connector system. For many years, JB had been supplying the Damen Hardinxveld site with various Stauff hydraulic components (tube clamps, connectors, measuring equipment), which suggested the choice of the Stauff-Form EVO forming system. Forming systems are characterised by their excellent tear-out strength and durability under extreme conditions, such as strong pressure surges and vibrations, a crucial benefit in particularly safety-critical sectors, such as shipbuilding. In the Stauff Form EVO forming system, a compact machine forms the tube end such that – when fitting “metal to metal” with a conventional fitting body and a union nut – it produces a positive-fit, sealed connection. The only possible leakage path is additionally protected by the special Stauff Viton sealing ring. Approval by the DNV and other independent classification organisations qualifies the system for use in the maritime industry. Shipbuilding was there from the very beginning In this 1960s, Stauff began as the inventor of plastic clamps to fasten hydraulic tubes, and has continuously expanded its product portfolio since then. Soon shipyards counted among the company’s convinced customers and, in 1968, the Stauff clamp received its first approval by Germanischer Lloyd. Today the company is known internationally as a full-liner for all hydraulic line system components, and supplies the manufacturers of mobile and stationary systems in the international hydraulic market. All products are developed and produced in-house: the Stauff Connect tube connection range, tube clamps and measuring equipment, SAE and ISO standard-compliant flange connectors, and two-way and multi-way valves to shut off fluid media flows. The marine industry also benefits from the company’s investment in research and development. A crucial service for internationally operating companies is the support and supply of its own production sites, as well as end cus-tomers, through 45 Stauff sites in 18 countries, combined with an international network of partners. Research, development and production continue to be located at Stauff’s headquarters in the Sauerland region of Germany. Success factor: collaboration with OEMs, service for end customers One of the key success factors for OEMs is direct collaboration with the development specialists at Stauff. This enables hydraulic circuits and line systems to be taken into account at the design stage and, if need be, special clamps developed, which, in turn, advance hydraulics throughout the marine industry. Sensitive criteria in- clude the available installation space, weight of components, vibration resistance, shock resistance, acoustics, contact with water, and special fire protection materials or certification requirements. Requirement: vibration reduction Stauff NRC clamps were developed to minimise noise emissions plus vibrations, which place special stress on the fasteners and tube connectors. NRC clamps (Noise Reduction Clamps) are designed for tubes with outside NRC clamps are available for tube diameters of between 6 and 89 mm. The insert contour of the NRC clamp reduces the contact area between the clamp body and the tube Marcel de Bruin (right) receives advice in Hardinxveld from the Dutch Stauff-Line system partner JB Hydraulics. Damen uses various products from the Stauff connector and fastening range. Damen work boats are known throughout the world for their excellent durability.
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