### normal speed calculation for cement ballmill - BINQ Mining

Dec 19, 2012· The Intermittence Ball Mill rotating speed is called critical speed . and now only the calculation formula on critical speed in . » More detailed Ball Mill,Raw Ball Mill,Batch Ball Mill -Product information .

### Pulley Calculator. RPM, Belt Length, Speed, Animated Diagrams

If you know any 3 values (Pulley sizes or RPM) and need to calculate the 4th, enter the 3 known values and hit Calculate to find the missing value. For example, if your small pulley is 6" diameter, and spins at 1000 RPM, and you need to find the second pulley size to spin it at 500 RPM, Enter Pulley1 Size 6, Pulley 1 RPM 1000, Pulley 2 RPM 500, and hit Calculate to find the second pulley diameter.