The hydraulic diamond wire saw is the first generation of diamond wire saw, because of the limitation of hydraulic motors, the linear speed of the diamond wire saw is relative low, generally less than 30m/s, it is usually only 10-20m/s. In order to achieve the linear speed of diamond wire saw, the diameter of main flywheel must be 1-1.2m. The hydraulic diamond wire saw cutting speed is lower, generally can reach 3-5 squarer meter per hour. Due to the hydraulic system is complex, difficulty in maintenance, it is easy to fail in the working environment with high dust of mine. The increase in hydraulic system power is limited by energy conversion efficiency and equipment manufacturing costs, the tension that can be provided to the diamond wire saw is limited. This powered wire saw can not drive very long rope. Therefore, the cutting area of the hydraulic diamond wire saw is generally smaller. The first diamond wire saws powered by hydraulic systems were used in marble mines for only a few years, and then replaced by more advanced electric diamond wire saws. The power mechanism of the electric diamond wire saw is a high-power three-phase AC motor, which directly drives the main flywheel to rotate and drives the diamond wire rope to move. According to the different power of the main motor, diamond wire saws can divided into small diamond wire saws with a drive motor power of 7.5-18KW, medium diamond wire saws with a drive motor power of 22-30KW, large diamond wire saws with a drive motor power of 37-55KW, and Super diamond wire saw with a drive motor power exceeds 55KW. The diamond wire saw with a constant motor is used for marble mining, which is equipped with a frequency converter can adjust the motor speed and the speed of the diamond wire saw can also be changed within a certain range.
