How To Choose A CNC Router Spindle?

The spindle is one of the most important components of a CNC router machine, which typically comes with a high-performance spindle to play its role. The quality of the spindle directly affects the processing speed and accuracy, so how to choose the right spindle?

1. The standard for judging whether the spindle is of high quality.

1.1. Does the spindle motor use high-precision bearings? If high-precision bearings are not used, the performance is that the spindle motor will overheat after long-term high-speed rotation, which will affect the service life of the spindle motor.

1.2. Whether the sound is uniform and harmonious when rotating at different speeds, especially at high speeds.

1.3. Whether the spindle is under force in the radial direction. The main reference is whether it is possible to cut harder materials at high speed. Some spindles can only cut harder materials at very low speeds, otherwise the spindle performance will be severely lost, which will affect the spindle accuracy after a period of time, or even malfunction.

1.4. If you want to pursue high processing efficiency, the processing speed must be fast, while the amount of knife is large, such as processing solid wood materials, you need a spindle motor with a power of 2.2KW or more.

1.5. The standard configuration of the spindle of the CNC machine has different configurations according to the specifications of the equipment.

2. Choose the right spindle according to different applications.

2.1. The object cut by the small CNC machine is a relatively soft material, so the spindle power can be 1.5kw - 3.0kw. If you choose this way, you can achieve the purpose of routing and save costs.

2.2. The power of the spindle motor of the CNC wood router can be selected according to the hardness of the wood to be processed, generally around 2.2kw - 4.5kw, this combination is also the most reasonable.

2.3. The spindle power of the stone CNC machine is relatively higher, generally around 4.5kw - 7.5kw, the most commonly used is 5.5kw spindle motor.

2.4. The spindle power of the foam CNC cutter should also be selected according to the hardness of the foam to be processed. The general power of 1.5kw - 2.2kw can meet customer needs.

2.5. Due to the relatively large hardness of the metal CNC machine, the power of the spindle motor is generally 5.5kw - 9kw.

Too much power of the spindle motor not only wastes electrical energy, but also increases the purchase cost. If the power is too small, the routing power demand will not be available. Therefore, it is very important to choose a suitable spindle motor power.

3. The relationship between the spindle speed and the cutting materials.

The greater the hardness of the routing material, the lower the rotation speed of the spindle. This is actually well understood. Materials with high hardness need to be grinded slowly. If the rotation speed is too fast, the tool may be damaged. The higher the viscosity of the routing material, the higher the speed of the spindle used. This is mainly for some soft metals or man-made materials.

The diameter of the router bit is also a very important factor in determining the spindle speed. The practical tool diameter is related to the processing material and processing line. The larger the diameter of the tool, the slower the spindle speed will be. The determination of the spindle speed should be based on the use of the spindle motor. When the spindle speed decreases, the output power of the motor is also reduced. If the output power is low to a certain level, it will affect the processing, which will adversely affect the tool life and the workpiece. Therefore, when determining the spindle speed, pay attention to ensuring that the spindle motor has a certain output power.