It is very important that you have the right spindle for high performance. The CNC Router spindles come in a variety of different horsepower and rpm performance. For example: three horsepower manual tool change spindles for 220 volt with an RPM range of 24,000 is just one of the many options that are available.
The weight of the CNC router spindles is also another very important feature. You want to make sure that your machine can support the weight as some of these spindles can weigh upwards of 18 -20 pounds. You don't want the weight to slow down the performance of the machine.
Having the right electric service to support the spindle is also very important. Most spindles come in 220 volt options, even though they can have different RPM speeds. Depending upon what brand of laser cutting machine spindle that you purchase, you can plan on spending several thousand dollars; however, depending upon what brand you can also find cheaper CNC router spindles that have a lower horsepower, such as 1, than can cost a considerably less amount of money.
Look for features that include: high frequency output, quiet operation, on/off via the CNC system, the ideal spindle that allows you to cut a variety of different materials, heavy duty mounting brackets, and even maintenance free options. These are just some of the many features that are available that can help to make your life a little bit easier.
There are also options of having multiple spindles. Of course, this type of technology will depend upon the brand, as all brands do not offer multi-spindle options for the CNC Router machine. These would come in handy for drill bits as well as many other things.
One thing that you must absolutely not forget to purchase whenever you purchase a new spindle for your routing machine is the proper router mount. Different mounts are designed to work with different spindles. You want a mount that can support the weight of the spindle that you buy while still allowing the machine to operate at full capacity, speed and performance level; you do not want it to break causing your machine to get torn up where repairs are needed. Mounts can usually be fairly inexpensive. Depending upon the quality of the mount and what the options are, you can purchase mounts for your new router spindle for as little as $45 dollars.