As we know, the spindle motor of the engraving machine is one of the core parts of the CNC engraving machine. The engraving effect, engraving quality, engraving accuracy, and speed of the engraving machine depend on the spindle motor performance directly. Therefore, users firstly are supposed to pay more attention to selecting a suitable engraving machine spindle according to the machine tool performance and processing technology when purchasing engraving machine spindle equipment. Additionally, users should understand its performance and classification.

Spindle Motor Classifications

Spindle motors are classified into air-cooled spindle motors and water-cooled spindle motors (liquid-cooled CNC spindle). If the temperature in your area is relatively low, it is a good idea for you to choose an air-cooled spindle motor to achieve a better cooling effect. On the contrary, if the temperature in your area is relatively high, you'd better select a water-cooled spindle motor. Furthermore, if a better cooling effect is needed in your application, you can also add a chiller to keep the water temperature relatively low to cool the main shaft in a better way. At last, if your area has a high temperature and it is very hot a wood engraving machine is needed for your special application. You may worry that a water-cooled CNC router spindle motor will get your boards wet. There is no need to worry about this situation. Because the water-cooled spindle for CNC comes with internal circulation cooling and the water won't spray out. As a result, it won't wet the material. Both air-cooled CNC router spindle and water-cooled spindle for CNC can be used in different areas for various applications. There are also square CNC spindle motors and round spindle motors according to the different motor shapes.

How to Judge Whether the Spindle Motor has High Quality?

1. Whether the CNC router spindle motor adopts high-precision bearings. If the CNC machine spindle motor does not use such bearings, the spindle motor may overheat after a long time of high-speed rotation, which affects the service life of the spindle motor.
2. Whether the running sound is uniform and harmonious (it is the rotation sound at different speeds, especially high-speed rotation).
3. Whether the radial direction of the spindle motor is stressed. Namely, whether hard materials can be cut by the spindle motor at high speed. Some CNC router spindle motors can only cut hard materials at very low speeds, otherwise, the spindle motor performance will be seriously impacted, affecting the spindle accuracy after some time, or even failure.
4. If you want to pursue high processing efficiency, high processing speed, and heavy workload at the same time during processing solid wood materials, etc., a spindle motor with a power of more than 2.2KW is required.
5. The spindle motor of the engraving equipment has different standard configurations according to the different specifications of the equipment.
How to Choose an Appropriate Engraving Machine Spindle Motor?
  • Advertising engraving machine
The engraving materials a relatively soft, so the spindle motor power of the advertising engraving machine can be within 1.5kw - 3.0kw, such as a 1.5kW air-cooled CNC spindle motor, which can not only achieve engraving purpose, but also can save the cost.
  • Woodworking engraving machine
The spindle motor of the woodworking engraving machine can be selected according to the hardness of the wood to be processed. Its power is generally around 2.2kw-4.5kw (2.2 kW air-cooled spindle motor for CNC machine, 2.2 kW water-cooled CNC spindle motor) and this combination is also the most reasonable.
  • Stone engraving machine
The spindle motor power of the stone engraving machine used by the manufacturer is relatively higher, generally around 4.5kw-7.5kw and the most commonly used is a 5.5kW spindle motor (6 kW air-cooled spindle motor for CNC machine).
  • Tombstone engraving machine
The spindle power of the tombstone engraving machine should also be selected according to the hardness of the stone to be processed. Generally, the power of 3.0kw-4.5kw can meet the needs of customers, such as a 3.5 KW air-cooled spindle motor for a CNC router and, a 4.5 kW air-cooled spindle motor.
  • Jade engraving machine
The power of the spindle motor of the jade engraving machine is generally 2.2kw-3.0kw due to its small bed. If the power of the spindle motor is too large, it will not only waste electric energy but also increase the purchase cost. If the power is too small, it will not meet the engraving power requirements. Therefore, it is very important to choose the suitable power of the spindle motor.
How to Choose a High-Speed Spindle Motor?
With the increasing development of industry, high-speed spindle motors have been widely used in many equipment and fields. A reliable high-speed spindle motor for metal milling can not only improve work efficiency but also reduce maintenance costs. Then how to choose a high-speed spindle motor?
1. Before purchasing a high-speed spindle motor, you need to figure out whether this kind of electric spindle is needed by you. Because the speed of the spindle motor is relatively high some machines do not need such a high-speed spindle motor for their application.
2. Users should purchase a high-speed spindle motor according to its speed and the power and voltage as well.
3. It is necessary to consider the machining accuracy of the high-speed spindle motor. If the accuracy is not accurate, it will lead to major problems in the process of machining and operation.
4. The last thing to consider is the overall performance of the high-speed spindle motor and each component as well as the service life of the high-speed spindle motor.