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Are the 77mm and 150mm sanding heads interchangeable
Mirka backing pads are carefully balanced to keep tools running efficiently and effectively. An incorrect backing pad causes the weight of the pad to change, which in turn can affect vibration levels.
It is not recommended to interchange Mirka DEROS 5650CV and Mirka DEROS 325/350CV backing pads and doing so may invalidate your machine warranty.
There are 2 backing pads available for the Mirka DEROS 5650CV:
Mirka code for 150mm backing pad - 8292605011
Mirka code for 125mm backing pad - 8292502511
The recommended 77mm backing for Mirka DEROS 350CV and 325CV - 8294791211
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Which backing pad fits my tool
Using an incorrect backing pad can cause additional strain on your sander. We have a useful guide to help you choose the correct backing pad.