Not enough torque?
As we saw above, the most important parameter in diamond cutting is speed of the blade. Ideally, the speed of the tool as it scrapes the rock should be 40-50m/s for efficient cutting. The maximum power that is available is, theoretically, the power of the diesel engine in the excavator. In reality, it is much less, depending of the efficiency of the power transfer system all the way from the engine to the rock. A 24t excavator typically has about 140KW engine and let’s assume we have a 2.5m blade on our saw. If the efficiency of the system right up to the blade is 80% (a very optimistic scenario!), than the blade power is ca 120kW. This power is the product of speed and torque.
