CNC Router Motor vs Spindle Motor
1. Easy to use
Spindle motors are most suitable for advanced or professional users who fully understand how to use spindles to accomplish specific tasks. The spindle motor is designed to run for a long time without overheating or damage.
Almost anyone can use a router. Just plug it in and flip the switch. Therefore, it is favored by enthusiasts and is considered an excellent tool for CNC entry.
Compared with routers, spindles are generally more suitable for high-power use. It is rated as an industrial equipment and uses an international standard root mean square (RMS) power supply. To be sure, it will continue to reach the power of propaganda.
For routers, the advertised power rating is usually "peak" horsepower. This means that the manufacturer can use the highest horsepower the router can achieve, even if it lasts a few seconds. This causes the tool to never be as powerful as the spindle.
3. Longevity and durability
If you do a lot of heavy CNC work, or just use your machine frequently, it is more worthwhile to use a spindle because routers tend to wear out more frequently when subjected to similar pressure.
4. Noise level
The spindle is driven by high frequency brushless. Compared with routers, this makes it quieter at work. However, if you are cutting, they will be noisy. Therefore, whether you are using a spindle or a router, you should always protect your ears.
The main shaft is usually water-cooled, but smaller motors can be air-cooled. Water cooling systems require special equipment, including water tanks, pipes, pumps, and in some cases, cooling circuits. With routers, you don't need such settings because they are air-cooled.
6. Speed control accuracy
The spindle runs together with the VFD, making the RPM and speed control more accurate than the router, and ensuring virtual speed control. The router does not provide any feedback. In most use cases, this may be fine, but in other cases, you need to control the RPM directly on the router motor and control the speed (the speed at which the cutter cuts the material) manually or through a program.
The router is a relatively cheap item, and you can find it online or in your woodworking shop at any time. They can be replaced easily, so almost all sellers provide them with some kind of warranty. On the other hand, the cost of a spindle is usually ten times that of a router.