Light, food-safe guide rollers


This ball bearing system solution, which is made with FDA-compliant components, is 60 per cent lighter than stainless steel solutions.

Igus has developed a system solution consisting of tube and polymer ball bearings for guide rollers and transport rollers. It is now also available from stock in a light and FDA-compliant design.

The rollers for use in the labelling, packaging and food industry consist of a blue PVC tube with two flange ball bearings at the ends made of wear-resistant xirodur B180 with stainless steel balls.

Released under the brand name xiros, the polymer ball bearings are maintenance-free and, importantly, lubricant-free. This is a decisive advantage for use in the food and packaging sector as there is no risk of contamination.

New in the product range is a ready harnessed system solution consisting of a blue PVC tube as well as two flange ball bearings made of xirodur B180 with stainless steel balls.

Compared to stainless steel tubes, the food-grade plastic tube weighs only about one third as much, which in turn has an effect on the required drive energy when the rollers themselves are moved, for example in film storage.

Also the dry operating xiros polymer ball bearings achieve less friction than lubricated ball bearings made of metal, since the balls do not have to overcome the resistance of the lubricant. Here, they have the advantage that they start much more easily than ball bearings made of metal.

Since 2008, igus has developed a wide range of lubrication-free polymer ball bearings, which are already in use in a wide range of applications. The service life of the xiros ball bearings can be calculated by entering the respective application parameters.

The most widely used designs are radial deep groove ball bearings according to DIN 625, similar to the available ball bearings made of metal. Further types are, for example, axial ball bearings, multiple bearings, slewing ring bearings or axial polymer ball transfer units.