Can damping increase the performance of a hydraulic cylinder?

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When will linear damping be available?

The new damping is already available, but for the time being only as a special cylinder. This year, we will successively introduce linear damping for all hydraulic cylinders of the HZ series.

How long have you worked on linear damping and what is development at AHP Merkle like?

At AHP Merkle, we have been working intensively on the damping of hydraulic cylinders for three years now, simply because practical experience has shown us that there is a component that potentially introduces uncertainty into the system. Or to put it another way, eliminating this vulnerability would open up great potential. Step by step and in many experimental set-ups, we have tested the damping and found a way to mathematically describe its operations. With this knowledge, we could then focus on mechanical optimisation of the damping.

We are here in your state-of-the-art test lab, your second workplace. What activities do you perform here?

We carry out all relevant tests in the test lab, whether it is testing new sealing or control concepts, or the tests for the development of linear damping, which were also carried out here. Of course we also test the prototypes of our new cylinders in our test lab. In our specifically designed, very solid end position test bench with its extremely flexible hydraulic unit, we can provide enough power to accelerate even large cylinders. Because we can simulate different application scenarios, we also perform tests in close co-operation with our customers here.

Why do you think linear damping will win over customers and prevail in practice?

Linear damping is absolutely beneficial for the customer. It allows you to move larger masses faster and to reduce cycle times. I believe that for certain applications, like moving really large masses or synchronised cylinders, there is simply no alternative to linear damping.

The usability offers decisive advantages when selecting and setting up the appropriate cylinder. During operation, linear damping helps prevent damages and prolongs the cylinder's service life. Our cylinders from the HZ series, which will gradually be equipped with linear damping this year, are identical to their predecessors, so they require no adjustments. Plug and Play. These are all arguments in favour of linear damping.

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