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The RotoTop Story

Holp’s path to becoming a pioneer

In 2001, Holp GmbH began distribution of their first in-house developed product - VarioLöffel. When presenting VarioLöffel in Denmark and Sweden in the summer of 2003, Günter Holp became aware that there is a directive in Sweden stating that there has to be at least one tilt rotator present at each construction site. Quickly it became clear: Without a comment in the tender documents, the tilt rotator would not be used in the whole of Germany.

Holp had already dealt with the topic of tilt rotators as early as 1992: First test runs with a tilt rotator at Holp’s own earthworks company resulted in cylinder damages.

Consequently, the cylinder was replaced by a piece of metal and the test run completed with rotation only. In doing so, it became evident: Rotation, as such, is fully sufficient and one just has to correctly position the bucket in accordance with the application.

Having developed further attachment tools, Günter Holp turned yet again to the topic of rotation on the excavator in 2005.

Following several failed attempts to get into business with Swedish manufacturers, the decision was made to start the project “Economic wrist on the excavator” as an in-house design. While, in Sweden, hoses were still run along the outside of the tilt rotator, Holp planned with a rotary joint for the German market: In order to provide every attachment tool with limitless rotation, the excavator’s full specific output in litres needed to be pumped through.

As early as 2004, the fully hydraulic quick-coupler was regarded as the “future design”. Holp realized quickly that a large rotary joint was required and it had to be adapted to this situation. As, at that time, there was nobody who could pump such a large quantity of oil through such a small space, this technology was simply developed by Holp themselves. In Sweden, this idea was merely smiled at in a patronizing way and dismissed as being too expensive. Rather than prevent Holp from trying, this only fuelled their efforts.

Use of an 8-way rotary joint - nowadays the standard at Holp - was simply unthinkable back then. It was the result of years of development with only one goal in mind: Pumping a maximum amount of oil to the attachment tool.“

It is exactly this pioneering spirit which has made our product a sure-fire success and the market leader in rotation technology!” – Günter Holp