About used Holaras machines

Since 1911, Hoopman Machines B.V. from Aalten has been the manufacturer behind the Holaras brand. Starting out as a local blacksmith, they have now grown into specialists in the field of machinery for agriculture, arable farming and onion processing. And in recent years also increasingly for biogas and industry.

Holaras onion haulm toppers

The Holaras onion haulm toppers remove the haulm before the onions are harvested. The haulm topper is mounted in the front of the tractor, with the harvester hanging behind the tractor. As a result, haulm topping and onion harvesting are done efficiently and in one pass. Holaras onion haulm toppers are often equipped with automatic height adjustment of the blades. The sensors of the probes control the height of the cylinders. The perfect length of onion haulm is at the level of the lowest leaf split. If the haulm is topped higher, storage operations are more difficult and take more energy. However, the haulm should not be topped too short either, as bacteria and fungi will penetrate the bulb more quickly through the neck.

Holaras onion harvesting machines

Onion harvesting machines are used in harvesting onions. The square rotating harvester shaft of the onion harvester goes through the soil, whipping the onions out of the ground. In addition to this square shaft, discs are mounted on each side. The discs prevent loss when picking up the onions. By means of a rubber pick-up roller, behind the harvester shaft, the onions are brought onto the harvesting mat. Here, the onions are cleaned and brought onto a second harvest belt, after which they are windrowed on the land to dry for a few days. After drying, the onions can be collected without any problems. Holaras onion harvesting machines are sturdy and stable. The machine comes in different operating widths.

Holaras onion toppers

After the onions come off the land, the haulm of the onion needs to be shortened once more to the neck. The onion topper is usually installed as part of a sorting and processing line. The Holaras onion toppers have blades that cut off the remnants of the haulm. Vibrating motors set the bar screens in motion with a directed number of vibrations. The onions are transported, as it were, floating above the (vibrating) sieves. The high speed and special shape of the blades create a strong air flow. As a result, the onion tails are sucked between the bars of the vibrating sieve and cut off by sharp blades just below the sieve.

Topping the onions creates a lot of dust and noise. For this reason, many companies opt for a ‘closed’ blade tailer. This closed model has a guard cover at the top and a dirt disposal belt at the bottom. This prevents dust or other parts from escaping the machine.

How do I find the right used machine for me?

On this page you will find an overview of all available used Holaras machines. Is the right machine not listed here? Then see the following pages for the current range of onion haulm toppers, onion harvesting machines and onion toppers. In the filter on the left you can select what you are looking for, such as machines for harvesting or processing onions. On the page of a specific machine, you will find all necessary information about the product, including pictures. Additional pictures can be sent to you upon request. Are you interested in one of the machines? Then you can easily request more information or a free quote from us. Is there something you need to know for sure? Contact us by phone or visit us to see the used machine for yourself at our company. You will get the best impression of the machine if you see it for yourself. Of course, we are also happy to give you advice on which machine would best suit your situation.

How do we work at Duijndam Machines?

At Duijndam Machines we always try to have the broadest possible stock of quality machines. Usually our stock counts around 900 used machines. Our philosophy is that our customers will be able to use the delivered machines for many years. Our choice for quality starts with a critical purchasing policy. After purchase, we check the machines for all sorts of aspects. This is followed by a thorough cleaning and any necessary repairs. Meanwhile, clear pictures and description are added to our website so that potential customers can get a good orientation online. Once you have found a suitable machine, it can be delivered to your doorstep worldwide if necessary.

Are you interested in one of our used Holaras machines? Then please contact us and we will provide you with personal advice.