How do I choose between the V2-10 and V2-50?

Glad you asked! We put together some differences between the two machines below. If you still want some clarification then please contact us to find out what machine may be right for you. 

Many of the specifications on the V2-10 and V2-50 are the same, for instance they both run off the same power, the work envelope is the same on both machines, all the specifications for the axes are the same such as backlash, deflection, repeatability, resolution, and max speed of each axis. The difference is in the spindle assembly. Below we layout the differences between the V2-10 and V2-50 for consideration in your machine application.







Spindle Speed


1,000-50,000 RPM

Tool Diameters

Up to ¼” (6.35mm)

Up to 4mm



CHB (⅛”, 3mm, 4mm)

Spindle Runout

0.0005 in (12.7 µm)

0.0001 in (2.5 µm)


  • This machine is ideal for fast, narrow and deep (~0.5mm - 3mm depth) machining.

  • Roughing operations should be carried out at 25-30K RPM or 50K RPM with very small tools. 

  • V2-50 has a fast material removal rate and can take fast finishing passes. Bulk material removal rates when roughing in aluminum, brass and delrin are a factor of  ~4 times faster than the V2-10 depending on tooling selection.

  • Deeper depth of cut and faster feed rates are possible on the V2-50 due to increased spindle and tool rigidity and decreased chip loads at higher RPM.

  • Finer surface finishes are also possible due the V2-50's increased rigidity and decreased tool runout.

  • Although the lever arm tool change achieves less clamping force than the V2-10, it does allow for faster tool changes. For those who had this version of spindle on the V1, tool pullout seems to be significantly improved with the higher speed motor. It is still possible for tools to pull out if cleanliness of the collet is not maintained, though.

  • The spindle is held in place with the same collar as our ER40 fixture collet, as shown below, which will allow users to adjust spindle stick out by around 20 mm, giving a huge advantage over the V2-10 when using small tools.

V250 running brass
  • Smaller diameter tooling can be used on the V2-50, tools as small as .005” / .125mm. The smallest diameter tool that should be used on the V2-10 is .025” / .625mm.

  • While the V2-50 may be especially useful in jewelry, medical and dental it’s benefits will be seen anywhere small parts are made, small tools are used or fast turn prototypes are required.  

  • The V2-50 does require an air compressor to prevent damage to the spindle. This is not a requirement of the V2-10. Recommendations for air compressors can be found here.


  • If you are using tooling with a shank size that is not 3mm, ⅛” or 4mm, you may want to choose the V2-10.

  • The V2-10's tool holding method has a much higher clamping force. So, if steering clear of any tool pull out is necessary for your application you may want to consider the V2-10.

  • The V2-10 uses ER11 collets, which are more readily available and less expensive than the CHB collets used in the V2-50 spindle. In most cases users will not need more than one CHB collet, which is supplied with the high speed spindle.

  • The V2-10 option costs less, so if cost is an important factor then this machine may be a good choice.

  • The V2-10 may be a better option if you would like to make parts that are close to the maximum work envelope in size. The high speed spindle is larger in diameter than the V2-10 extended and standard tool holders and requires .15” / 3.8mm more clearance above the table surface.

  • Although it is a slightly slower process, the V2-10 and its tooling allows for pre-mounted, pre-measured tools to be easily swapped in and out without having to probe the tool after each tool change.

In Summary

The V2-50 is better for more niche applications where small tooling is going to be run often or predominately harder metals cut (SS 303 or harder). For example if you are looking to make small, intricate medical device prototypes out of 316 stainless steel, the V2-50 would be the more suitable machine than the V2-10. The V2-10 is a more versatile machine in that it can be used with a wider array of tooling and applications, so if you're looking to teach 5-axis or to take on general prototyping the V2-10 may be more applicable. If you are unsure of which model Pocket NC will suit your needs best please reach out to us.

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