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Cleveland C61857 carbide end mill 30 degree 17/64 inch shank uncoated square tip

Cleveland

Cleveland C61857 carbide end mill 30° 17/64 in shank

SKU CH-H43C-N40T4

Carbide square end mill with 30° helix, .265625 in diameter and .875 in length of cut

  • TypeMilling
  • Carbide construction resists wear for longer tool life
  • 30-degree helix angle improves chip evacuation during milling
  • 17/64 inch shank diameter fits compatible tool holders
  • 875 inch length of cut enables deeper passes
  • Uncoated carbide suits general-purpose machining applications

Application & Purpose

The Cleveland C61857 is a solid-carbide square end mill built for general milling tasks in a workshop or light-production environment. Its 30-degree helix and uncoated substrate suit operators who need a straightforward cutter for slotting, profiling or finishing passes without specialised coating requirements.

Thermals, Noise & Power Draw

The tool runs uncoated and non-coolant-through, so heat dissipation relies on chip evacuation and external flood or mist coolant supplied by the machine. Cutting forces stay moderate with the 0.265625-inch diameter and 0.875-inch length of cut, keeping spindle load and vibration low during typical engagement. No internal coolant passages mean no extra pump demand or filtration concerns.

Build Fit & Clearances

The 5/16-inch straight shank fits standard ER, collet or Weldon holders without adapters, freeing tool-changer slots that larger-shank cutters would occupy. Overall length of 2 1/2 inches leaves ample clearance for shallow pockets while avoiding interference with fixture clamps or rotary-table surfaces. Neck diameter is not applicable, so the cutter transitions directly from shank to flutes for maximum rigidity in short-reach cuts.

Highlights

  • Carbide construction resists wear for longer tool life
  • 30-degree helix angle improves chip evacuation during milling
  • 17/64 inch shank diameter fits compatible tool holders
  • 875 inch length of cut enables deeper passes
  • Uncoated carbide suits general-purpose machining applications

Specifications

BrandCLEVELAND
TypeMilling

Questions about this item

How do I install the 17/64 in. shank carbide end mill in my collet, and what step is often missed?

Match the 5/16 in. shank diameter to a 5/16 in. collet, tighten fully, and verify the 0.875 in. length of cut clears the workpiece — the missed step is confirming shank-to-collet size match before cutting.

What maintenance or replacement will the uncoated carbide end mill need over time?

The uncoated carbide flutes will dull with use; plan to resharpen or replace the tool once edge wear reduces cut quality on the 0.265625 in. milling diameter.

What limit appears first during sustained milling with the 30° helix square end mill?

Heat buildup in the uncoated carbide is the first limit; without coolant-through capability, extended cuts at the 2-1/2 in. overall length raise temperatures and accelerate flank wear.

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