Cathelco – high quality brushes and sliprings
The effectiveness of the shaft earth arrangement relies on the quality of the shaft earthing brushes and slipring. That is why it is important for customers to only use Cathelco OEM replacements which are designed to give the optimum level of performance.
Cathelco brushes are made from 80% silver and 20% graphite, a specification that provides the best combination of conductivity and wear resistance.
The high proportion of silver provides low resistance, whilst the graphite element gives the strength to withstand friction, ensuring a longer life and greater economy. Equally important is the design of Cathelco’s sprung brush holder which ensures that the correct amount of pressure is applied to the slipring at all times.
The slipring, itself, is made from copper with a solid silver inlay track to provide excellent conductivity when in contact with the brushes. All of these features ensure that damaging stray currents are safely conducted to earth without causing damaging ‘spark’ erosion in bearings.
- Generally, silver graphite brushes need to be replaced every 3-6 months.
- Ordering in bulk saves time, money and the risk of running out.
- Generous discounts are available from Cathelco for bulk purchases.
- Timely renewal protects bearings against damaging ‘spark’ erosion.