The spindle motor of the stone engraving machine should be air-cooled or water-cooled.

 For this problem, many customers have doubts. On this issue, we will briefly introduce: First, let us know the commonality between the two: in the internal structure, the two are unified, and they all use the stator to rotate around the coil; From the control mode of the motor, the water cooling is almost always controlled by the inverter, and the air-cooled spindle is not. It can be controlled by frequency conversion and non-frequency conversion.
The difference between water-cooled main shaft and air-cooled main shaft: First, water cooling, as the name implies, uses water circulation to cool the heat generated by the high-speed rotation of the main shaft. This effect will be good, because the temperature after the water passes through the circulation (common test) will not exceed 40 degrees. The air-cooled main shaft uses a fan to dissipate heat, and its effect is certainly not as good as water cooling. Second, the noise, water-cooled main shaft is basically no noise, but the air-cooled main shaft is very loud; third, the service life, the water-cooled main shaft should pay attention to maintenance, Changing the water frequently or using an industrial water cooler, the life of the spindle is much longer than that of the air-cooled spindle! Fourth, the accuracy, the axial and radial runout of the water-cooled spindle are basically below 0.003 mm, while the air-cooled spindle (domestic) is far behind!