Angle Grinders mm to inch grinding disc guide
9 inch grinder size in mm. A (nine) 9 inch grinder is 230mm. 9 inch (230 mm) angle grinders have been banned on some work sites due to the increased risk of injury. The increased power and size of the unit will cause more severe kickback and gyroscopic effects ( makes the grinder difficult to use, the power is simply too much for some