How long do the replaceable brushes last? Support January 14, 2021 20:22 Updated Follow Answer Under most conditions the carbon brushes should last approximately 150 hours. Related articles Can I buy Black and Decker parts online? How can I obtain electrical components that have been discontinued like capacitors, armatures, brushes, switches, cords, etc? How do I contact Customer Service? I have a Black & Decker Toy (including B&D Junior), Who do I contact for support or customer service? What is the warranty for my BLACK+ DECKER tool? Comments 0 comments Please sign in to leave a comment.