Metal Fiber Brushes (MFBs) for Power Applications
DHi offers advanced technology solutions for your power transmission problems, providing:
- Reduced maintenance costs
- Increased service life and online availability
- Enhanced performance
- Improved environmental conditions
DHi provides full-spectrum engineering and life-cycle support for metal fiber brushes, from form-fit-function replacement of existing carbon brushes in your legacy power transmission systems, to complete design, manufacturing and customer support for your new systems incorporating our metal fiber brushes.
DHi’s metal fiber brushes have unique performance characteristics and demonstrated advantages over carbon brushes now in use. Some key performance attributes our metal fiber brushes used in slip ring applications:
- Current densities of up to 250 Amps/sq inch are easily obtained.
- Current densities of up to 1000 Amps/sq inch have been obtained under select conditions.
- Less than 1/5 the wear debris volume of carbon brushes.
- Non-dimensional wear rates of 2 x 10-11 at sliding speeds of 20 meters/second in open atmosphere. In all side by side testing, MFB’s had at least twice the service life of carbon brushes.
- Extremely high tolerance to atmosphere contaminates.
- Extremely low electrical noise across the brush slip ring interface.
- Lower levels of acoustical noise.
