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Cleveland 61671 carbide end mill, 30 deg helix, .25 shank, .75 cut length, uncoated

Cleveland

Cleveland 61671 carbide end mill 30 deg 1/4 in shank .25 dia .75 loc

SKU CH-88N6-A9JMW

Carbide end mill with 30 deg helix, .25 in diameter and .75 in length of cut for milling operations

  • TypeMilling
  • Carbide construction resists wear for longer tool life
  • 30 degree helix angle improves chip evacuation during milling
  • 1/4 inch shank diameter fits standard collets and holders
  • .25 inch cutting diameter suits precision profiling work
  • .75 inch length of cut allows deeper passes in a single operation

Cleveland 61671 Carbide End Mill

This Cleveland 61671 carbide end mill is a square-profile milling cutter built for general-purpose material removal. It features a 30-degree helix, 0.25-inch shank and 0.75-inch length of cut. The uncoated carbide substrate suits a range of ferrous and non-ferrous metals. Overall length is 2 1/2 inches.

Machinists needing a 30-degree helix cutter

Shops running high-speed finishing passes or deep-slotting operations may prefer a different helix angle or a coated tool for longer edge life. Buyers who need coolant-through capability or a necked shank for extended reach should select another design.

30-degree helix angle

The 30-degree helix balances chip evacuation and edge strength for conventional milling. A lower angle increases rigidity for heavy roughing, while a higher angle improves shearing action in soft materials. Match the helix to the cutting strategy and workpiece material.

Highlights

  • Carbide construction resists wear for longer tool life
  • 30 degree helix angle improves chip evacuation during milling
  • 1/4 inch shank diameter fits standard collets and holders
  • .25 inch cutting diameter suits precision profiling work
  • .75 inch length of cut allows deeper passes in a single operation

Specifications

BrandCLEVELAND
TypeMilling

Questions about this item

How much heat does the 30 deg carbide end mill generate during extended milling runs?

Carbide dissipates heat efficiently, but sustained cuts in tough material will still warm the .25 dia cutter; use appropriate feed rates and coolant to manage temperature.

What tool holder or collet is required to run the 1/4 in shank end mill?

A standard 1/4 in ER collet, Weldon flat holder or shrink-fit chuck that accepts a .25 in shank will secure the 61671 end mill for milling operations.

Will the .75 length of cut on this carbide mill reach deep features on older manual knee mills?

The .75 in length of cut and 2 1/2 in overall length fit most manual knee mill quills, provided the workpiece clearance allows the full stick-out.

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