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Cleveland 31199 square end mill cobalt uncoated Weldon flat 4 inch cut

Cleveland

Cleveland 31199 Square End Mill RG8 4" L of Cut

SKU CH-EXEW-YETC0

A roughing end mill with a 4 in length of cut for heavy material removal

  • TypeMilling
  • Roughing end mill removes material quickly
  • Cobalt construction resists heat during heavy cuts
  • Uncoated surface suits dry machining operations
  • Weldon flat shank locks securely in holders
  • 4 in length of cut reaches deep features

Roughing End Mill for Heavy Stock Removal

This Cleveland C31199 roughing end mill is built for aggressive material removal in milling operations. The cobalt construction provides high heat resistance for demanding cuts. It features a 1 inch milling diameter and a 4 inch length of cut. The tool is designed for professional machinists and metalworking shops.

Weldon Flat Shank Limits Holder Compatibility

The 1 inch Weldon flat shank requires a matching Weldon-style holder or end mill adapter for secure clamping. This interface does not suit collet chucks or shrink-fit holders without the correct adapter. The uncoated cobalt substrate performs best with flood coolant or mist lubrication. Non-coolant-through design means chips must be cleared externally.

Verify Machine Rigidity and Clearance Before Use

Check that your milling machine spindle accepts a 1 inch Weldon shank and provides sufficient Z-axis travel for the 6 1/2 inch overall length. Ensure the work envelope accommodates the 4 inch cutting length without interference. Rigid setups are essential to prevent chatter with this heavy roughing geometry. Buyers needing finish passes or smaller diameters should select a different tool.

Highlights

  • Roughing end mill removes material quickly
  • Cobalt construction resists heat during heavy cuts
  • Uncoated surface suits dry machining operations
  • Weldon flat shank locks securely in holders
  • 4 in length of cut reaches deep features

Specifications

BrandCLEVELAND
TypeMilling

Questions about this item

What does the RG8 designation tell me about which end mill to select?

RG8 is the Cleveland list identifier for this roughing end mill with a 1 in milling diameter, 4 in length of cut and 1 in Weldon shank.

How does the 4 in length of cut perform when the tool is mounted in a machine?

The 4 in length of cut allows deep pocketing or profiling passes in a single engagement, reducing the number of step-downs needed.

What does the Weldon flat shank mean for tool holding and run-out?

The 1 in Weldon flat locks into a standard side-lock holder, giving secure clamping and low run-out for heavy roughing cuts.

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