STAUFF The simpler the assembly the more secure the connection

fluid · 06 2023 39 Hydraulics torque remains the same across all assembly operations. The installation methods are identical, whether the con- nectors are lubricated or non-lubricated. There are also other benefits apart from saving time and fitting safety: the nuts also move very smoothly due to the lubricant contained within the coating. This ‘integrated’ lubricant also lasts longer than a lubricant that is applied separately. In turn, this saves resources, even if only small amounts of lubricant are used in each assembly process. It also avoids false leaks, which can easily occur if the user identifies the lubricant as escaping hydraulic oil. When the mobile unit is deliv- ered, there are also no remains of lubricant adhered to the connectors where dirt can easily accumulate. Corrosion resistance tests for agriculture The operating conditions of agricultural equipment are naturally demanding: moisture, abrasive dust and fer- tilisers or pesticides have a particularly adverse impact on agricultural implements. Stauff ’s zinc-nickel coating on its components is therefore tested in the salt spray test according to DIN EN ISO 9227. It is also confronted with aggressive media, such as hydraulic, lubricating and engine oil or fuels, refrigerants or brake fluids, in the company’s own research laboratory. Agricultural ma- chinery manufacturers can also order additional tests and have Stauff document the resistance of the coating to specific fertilisers, pesticides, cleaning agents and other substances. Intuitive handling with over-tightening pro- tection The omission of the need to lubricate the threads when assembling connectors, with all the associated benefits, is just one of many examples of how simple and intuitive workflows can be designed with connectors from the Stauff Connect range. A further example of this is the assembly of the frequently used 24° taper fitting with O-ring. Fitters simply tighten the union nut until the force increases significantly, and then tighten it by 120°. There is no absolute need for a torque wrench. Nonethe- less, users can be completely sure that the line is correct- ly connected. Over-tightening can thus be reliably ruled out, as the face of the fitting hits a ledge at the end of the taper, with the result that the fitting cannot be impermis- sibly extended. André Degen, Application Engineer at Stauff: “Stauff always has the user’s situation in mind during the development of its products. The handling and properties of our connection systems are also com- municated in an easy-to-understand manner in assem- bly training courses at our customers’ premises, includ- ing the manufacturers of agricultural machinery.” These detailed engineering solutions provide clear practical advantages: “For decades, Stauff has been familiar with the requirements of original equipment supplies in all sectors, and not just since the development of our own tube fitting range. Once customers have met Stauff Con- nect, they become convinced of the assembly benefits and tests under practical conditions, and then include our products in their list,” continues Degen, talking about his experience with customers. Stauff will be exhibiting at agritechnica on Stand E31 in Hall 16. rso n Stauff tube and hose connectors are simple to assemble and guaran- tee leak safety in agricultural technology. Original equipment manufacturers can also have the coating tested for its resistance to fertilisers, pesticides etc. The design of the frequently used 24° taper fitting with O-ring reliably rules out over-tightening.