Overview
Replacement carbon brushes restore proper electrical contact between the stationary housing and the spinning armature in brushed power tools. As brushes wear down during normal operation, intermittent sparking, reduced power, and eventual motor failure can occur. These aftermarket brushes are manufactured to OEM dimensions for a precise fit.
Key specifications
- Aftermarket carbon brush replacement
- 8-piece set
- Manufactured to OEM dimensions
- Pre-formed contact surface for faster break-in
- Spring-loaded design for consistent pressure
Compatibility
These brushes are designed for DeWalt power tools as listed in the compatibility section above. Verify your tool’s model number and brush part number before purchasing to ensure correct dimensions and lead configuration.
Installation notes
Disconnect the power source before servicing. Locate the brush caps on the motor housing, typically held by a slotted cap or Phillips screw. Remove each worn brush and note its orientation, then insert the replacement brush and secure the cap. Run the tool briefly at low speed to seat the new brushes.
Common questions
Q: Will this N257540 brush set fit my DeWalt DWE402K and DWE43066N angle grinders, or is it only for one model?
Yes, this 8-piece N257540 replacement brush set is made for the listed DeWalt angle grinder models, including DWE402K and DWE43066N. As long as your grinder uses part number N257540, these brushes are the correct replacement style for fit and function.
Q: How do I know if the brushes on my DWE4214 or DWE402W need to be replaced?
Common signs include the grinder cutting out, reduced power under load, excessive sparking, or intermittent operation during use. If you open the brush caps and the carbon brushes are worn short, chipped, or unevenly worn, it is a good time to replace them as a pair.
Q: Do I need to do anything special after installing these N257540 brushes in a DeWalt DWE402?
After installation, make sure both brushes move freely in the holders and that the caps are secured properly before powering the tool on. It is also a good idea to run the grinder with no load for a few minutes so the new brushes can seat evenly against the commutator.
