OSG's HY-PRO® CARB VGM end mill is a series of variable geometry end mills for dynamic milling ideal in steel and stainless steel.

The HY-PRO® CARB VGM Series is OSG’s newest and most impressive release. The HY-PRO® CARB VGM end mill is a series of variable geometry end mills for dynamic milling ideal in steel and stainless steel. Included in this series is 5-flute, 6-flute, and 7-flute end mills.

As dynamic milling has increasingly become more popular, a lighter width of cut is essential, especially in difficult-to-machine materials such as steel, stainless steel, and exotic materials. 

With variable index and unique flute geometry, the OSG HY-PRO® CARB VGM series features unequal flute spacing which reduces vibration during machining by altering the timing of each flute engaging in the workpiece. In addition, a sharp rake angle, high helix and adjusted core diameter maintains excellent cutting edge sharpness and tool rigidity to promote smooth, stable cutting with low cutting force.

In just a short couple of months since this tool has been released, OSG has received an overwhelming amount of reviews that include cycle time reduction, increased tool life, and less cost per tool.

Below are some of the customer responses they have received from this series:

  • Raven Rock Machine Shop was looking to reduce cycle time but still maintain an acceptable finish that would highlight the pride and high quality of their shop. With use of the HY-PRO® CARB VGM5, they saw a three-minute cycle time reduction, while running two parts for an initial first article inspection. Tool maintained service life through 75 parts. The customer was very impressed and they stated it is hard to impress them.
  • Customer wanted to see reduction in cycle time and increase in tool life after hearing about OSG’s new 5-flute end mill, the HY-PRO® CARB VGM5. They were running a standard 4 flute at 500 SFM and 32 IPM full slotting, 50 IPM side milling. We put the VGM5-0132 in at 550 SFM and 42 IPM full slotting, 60 IPM side milling. The standard end mill would last 9-10 parts before wearing out. The VGM5 lasted 25 parts.
  • VGM success at a shop with a ¼" VGM5-0070 in 17-4PH Pump Impeller. Customer stated “The VGM sounded much better and the finish was excellent.” The milling process was much improved by changing to VGM, improved finish and stable process. After running a few parts, the end mill still looked new.
  • ½" VGM5 in 304SS against a standard end mill. With the VGM, cycle time was reduced by 10 minutes and more than doubled the tool life! The standard end mill’s tool life was 15 pieces; the VGM5 was able to complete the job at 45 pieces and still looked great. On top of all that, the VGM5 was $10 less than the standard.

You can download OSG's brochure of their VGM Series of end mills to help you find your dynamic milling solution.

To learn more about OSG’s HY-PRO® CARB VGM end mills, visit


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I have a job right now to try your mills using dynamic milling in 1018 steel. contact me imediately!!


Chris Bergstedt


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OSG is a leading manufacturer of taps, end mills, drills, and indexable cutting tools. OSG’s extensive line of high technology cutting tools features exclusive metallurgy, cutting geometries and proprietary surface treatments to help increase productivity, reliability and tool life.

OSG is determined to achieve continuous growth by contributing to the advancement of manufacturing industries worldwide. Gaining the support and trust of our customers has always been the commitment of OSG.

As a comprehensive cutting tool provider with operations spanning across the globe, OSG is committed to contributing to the advancement of the manufacturing industries by shaping our customers’ dreams into reality.

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