https://www.euroguss.de/en/ausstellerprodukte/guss20/product-10199311/hydraulic-clamping-device-ratio-clamp

Hänchen's Ratio-Clamp® offers safety while saving energy costs. Thanks to its sophisticated functional principle, the clamping device features some fundamental advantages when compared with other locking systems:

- clamps all round rods
- immediate fixation of the rod
- direction-independent load-bearing
- clamps without energy supply
- safe even in extreme conditions such as heat or cold
- special solution: up to 2.000 kN for rod Ø of up to 300 mm

Functional principle of the clamping device of a gantry milling machine

Ratio-Clamp® rod locks works mechanically by using frictional contact: The power is directed through springs to a clamping sleeve which holds the rod radially using friction. The load capacity of the fixation is not influenced by the direction. The hydraulic releasing pressure moves the locking piston against the spring power to unlock the clamp - the rod can be moved in both directions. When the hydraulic pressure drops, the power stored in the springs is released, and the rod is locked.

http://www.haenchen-hydraulic.com/clamping-device.html

Hydraulic cylinders for die casting

No matter under which conditions a hydraulic cylinder should work for you – Hänchen makes it possible.

With its wide industry knowledge, Hänchen offers tailor-made hydraulic cylinders and complete systems for foundry technology. These are optimally adapted to the special requirements and environmental conditions such as extreme heat, high contamination, heavy continuous operation and confined space conditions.

Hydraulic cylinders from Hänchen in massive circular design are resistant to pressure peaks and consist of as few individual components as possible. This results in low wear and maximum service life. A lifelong availability of spare parts and special solutions even for small batch sizes are also standard at Hänchen.

The competence in key technologies forms the basis for reliable, durable and high-quality hydraulic products and solutions. Well over 345,000 hydraulic cylinders have been designed, produced and delivered worldwide since 1952 as a catalogue product or special production. On this basis, Hänchen offers small series and individual quantities without prototype risk for a wide variety of applications.

The Ostfildern-based company stands for comprehensive expertise in the field of drive solutions. With more than 200 highly qualified and long-standing employees, Hänchen constantly develops, tests, and produces innovative solutions - in its own research and production departments in Germany.