In the industrial field, electroconductivity is an extremely important factor to be monitored in all those cases in which it can pose a danger to persons.
Let’s take a step back, reminding that conductivity is the ability of a body to let an electric current flow when it is immersed in an electric field.
The electrical conductivity in the field of industrial wheels is used to protect against electrostatic discharges generated by the transport equipment or the transported goods.
Among the materials used in the last years, conductive rubber stands out: this is a material particularly suitable in the contexts where the presence of materials suitable for electrical conductivity is required. These include, for example military sector, medical technology, electrical engineering and semiconductor industry, automotive sector and hospital, pharmaceutical and chemical sectors.
The conductive rubber is a special type of synthetic rubber that contains graphite. This element makes it electrically conductive, as it is composed of a conductive polymer, while maintaining the flexibility and elasticity typical of rubber.
The use of conductive rubber is widespread. Electrodes with conductive rubber, for example, are used for electrostimulation and electrotherapy; rubber plates with a dense alignment of alternating conductive and non-conductive parallel tracts are the standard system for connecting the printed circuit boards of watches, calculators, mobile phones and other equipment to their liquid crystal displays (LCDs);
then, again, rubber membranes with conductive pads are used as keyboards, mainly for mobile phones and TV remote controls.
Rubbers or, more specifically, conductive elastomers, are made of and divided according to different polymers, combined with various types of filler. Therefore, they are composite materials that allow using the same seal as an environmental seal, taking advantage of the excellent EMI shielding.
· Excellent EMI shielding and environmental seal, for a better use of space
· Available in many types of profiles and different shapes
· Low compressive forces achievable with hollow seals
These features make them particularly suitable for the military, aerospace, biomedical and telecommunications fields
Leading companies in the industrial wheels sector, such as Tellure Rôta, offer wheel solutions with modified electrical characteristics able to meet the electrical conductivity requirements of ESD applications.
An example of this are the black rubber wheels with Electrical resistance < 105 Ohm
The wheels of 53 series diam. 80-200 mm with roller bearing hub, in fact, can be made with rubber ring with electrical resistance lower than 105 Ohm.
These are conductive wheels that comply with the parameters provided for by the sector standard ISO 22883:2004.
If you would like to learn more about wheels made of conductive rubber, please check this link: https://www.tellurerota.com/en/antistatic-and-statically-conductive-solutions