On average you will see 125-150 hours of use on your MM-1000 DI spindle before you start to see signs that it is time to change them.
![](https://572d4e.a2cdn1.secureserver.net/wp-content/uploads/2023/10/20102-Carbon-Brushes-Set-for-MM-1000-300x300.jpeg)
These signs can include:
sign 1
sign 2
You can order a replacement set from our website HERE.
Categories:
Hardware Troubleshooting,
Maintenance,
Spindles and Routers