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

Glad you asked! We put together some differences between the 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 CHB/CHK are the same, for instance they both run off the same power, the work envelope is the same on the 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 lay out the differences between the V2-10 and V2-50 CHB/CHK for consideration in your machine application.

 

V2-10

V2-50CHB

V2-50CHK

Price

$5999

$9000

$9200

Spindle Speed

2,000-10,000RPM

1,000-50,000 RPM

1,000-50,000 RPM

Spindle Runout

0.0005 in (12.7 µm)

0.0001 in (2.5 µm)

0.0001 in (2.5 µm)

Tool Diameters

Up to ¼” (6.35mm)

Up to 4mm

Up to ¼” (6.35mm)

Collet

ER-11

CHB (⅛”, 3mm, 4mm)

CHK 

Collet Pricing & Availability

Less expensive, readily available

More expensive, less available

More expensive, less available

Tool Change Time

Longer (3 screws)

Quick, lever arm

Longer (2 wrenches)

Ability to Pre-Measure Tools

Yes

No

No

Tool Grip Strength

Excellent

Subject to tool pullout

Excellent

Ease of swapping spindle

Harder

Easy (ER40 collet)

Easy (ER40 collet)

Tool Length Adjustment

Wide Range with Standard & Extended Tool holders

Spindle adjusts 20mm in negative direction

Spindle adjusts 20mm in negative direction, 30mm in positive direction

Air Compressor Required

No

Yes

Yes


Note: In July 2021 Pocket NC introduced a new 50,000 RPM spindle option that uses CHK collets. If the below are specific to one spindle option over the other we will indicate it. The machine known before as the V2-50 is now the V2-50CHB and the newly introduced spindle option is designated as V2-50CHK. 

V2-50 

  • 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.
  • 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.  

V2-10

  • 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 V2-50 spindles are larger in diameter than the V2-10 extended and standard tool holders and require 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 are 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 the machine needs to be portable for recruitment or demonstrations the V2-10 may be better because no air is required. 

With the introduction of the V2-50 CHK option the tool grip strength and tooling diameter issues are solved, making this an optimal crossover between the V2-10 and V2-50.

If you are unsure of which model Pocket NC will suit your needs best please reach out to us.

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