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Lubrication-free polymer plain bearings in hoeing technology for weed control

iglidur bearings enable efficient hoeing in the award-winning VarioCHOP system from samo.

Weed control without herbicides - not only organic farmers, but also more and more conventional farms are turning to hoeing technology for this purpose. To ensure that the machines are fast, maintenance-free and flexibly adaptable, samo Maschinenbau GmbH has developed a completely new hoeing unit - the VarioCHOP. It allows the working width to be adjusted right in the tractor cab. This makes weed control more time-saving and efficient. To ensure that the modern device is maintenance-free and reliable, the engineers have opted for lubrication-free polymer plain bearing technology from igus.

VarioCHOP

With the VarioCHOP, the working width can be easily adjusted manually or automatically. Weeds are chopped more efficiently and sustainably.

Products used

Plain bearings
Plain bearings made of iglidur G

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iglidur sample box
iglidur plain bearings sample box

Problem

To combat weeds successfully, organic farmers in particular are currently relying on hoeing machines that get to the root of the weeds. The problem with conventional tools is that they have to be adjusted mechanically and while stationary at up to 60 points using a spanner and folding rule. Processes that are very time-consuming. This is why samo Maschinenbau GmbH has developed the VarioChOP system, which enables variable and infinitely variable chopping.
The VarioCHOP consists of several chopping elements, the number of which can be determined by the customer. Parallel kinematics allow the individual elements to be easily adjusted. 
The chopping elements are exposed to harsh environmental conditions, e.g. dust, dirt and moisture. Accordingly, the bearing points must be extremely resistant and withstand impacts and knocks as well as the weather.  
In addition, samo was also looking for a material that is lubrication-free and cost-effective.

Solution

Today, iglidur plain bearings ensure that the moving chopping elements are mounted securely. To be more precise, a total of 18 iglidur plain bearings made from the tribo-polymer iglidur G are used in the parallel kinematics of the chopping elements. As an all-rounder, iglidur G is extremely wear-resistant, corrosion-free and lightweight. Furthermore, samo Maschinenbau can now completely dispense with additional lubricants. The absence of grease and oil means that no lubricants get into the ground. The plain bearings are very resistant to dust and dirt and are easy to clean. Shocks and impacts are absorbed by the mounting arrangement with iglidur plain bearings. A further 14 plain bearings made of the same material ensure maintenance-free mounting of the height guide. iglidur G has a high permissible surface pressure and is also very attractively priced as a large bushing with a diameter of 35 millimetres. The material has also been tried and tested for years in heavy-duty applications thanks to a large number of tests in our in-house igus laboratory.

"We were looking for a material that is lubrication-free, robust and cost-effective, which is why we opted for the iglidur plain bearing from igus"

Klemens Ollmaier, Managing Partner of samo Maschinenbau GmbH

iglidur G plain bearings

A total of 14 iglidur G plain bearings are used in the level guide of each chopping element.

iglidur G plain bearings

The plain bearings are simply pressed into the elements. They are lubrication-free, insensitive to dust and protection, making them ideal for use in agricultural machinery.

ASI Automatikk AS Distributor+47 9006 1100