New in the Stauff range: Male stud swivel elbows

(Werdohl, August 2017)

New in the Stauff range: Male stud swivel elbows

Introducing freedom of movement into hydraulic line systems

Stauff is adding male stud swivel elbows to extend its range of tube fittings. These connecting elements feature an additional axis of rotation in the connector and introduce continuous freedom of movement into the hydraulic line – for instance at the hydraulic attachments of construction machinery or the articulated joints of wheel loaders – further increasing the leak safety of the hydraulic system.

The compact design of the FI-DGWESV swivel fittings was designed precisely for this kind of application: they compensate for regular or irregular rotating, pivoting or oscillating movements between the line and machine component during operation, for instance for the tension-free connection of pressurised hose lines equipped with connecting fittings incorporating a sealing cone connection in accordance with DIN 3865. They also prevent torsion being generated and extremely tight bending radii on moving hose lines. 

From the outset, users of the new range, part of the Stauff Connect series, can take advantage of a comprehensive range. The connection on the one side of the swivel elbow is always a 24° inner cone (form “W” as per DIN 3861) in sizes 6L to 42L (Light Series) and 6S to 38S (Heavy Series). The opposite side can either be fitted with a Whitworth pipe thread (G1/8 to G1-1/2) or a metric thread (M10x1 to M48x2) with a profiled seal. NBR (Buna-N®) is used as the standard sealing material, although alternative materials as well as different connection versions are available on request.

The rotating movement is provided for by a self-lubricating slide bearing, which uses the system fluid as lubricant, making the bearing completely maintenance-free. The maximum permitted number of rotational movements in continuous operation depends on the size. Stauff would be happy to assist with the selection of the correct components for a specific application based on the general framework conditions.

The new swivel fittings are designed for an operating pressure of up to 400 bar (with a general safety factor of 2.5 and depending on the series and size of the fitting body). Like the complete Stauff fittings range, they boast a high-grade zinc/nickel coating, which meets the most exacting requirements in terms of corrosion protection and appearance.

Image 1:

The new Stauff FI-DGWESV swivel fittings compensate for regular and irregular movements
between the line and machine component during operation
(Courtesy of Walter Stauffenberg GmbH & Co. KG)

Download image (JPG, 1500x1500px)

Image 2:

The additional axis of rotation in the connector provides for continuous freedom of movement
in the hydraulic line
(Courtesy of Walter Stauffenberg GmbH & Co. KG)

Download image (JPG, 3000x3000px)

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