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Cleveland C33378 HSS end mill 1.125 inch diameter 4 inch cut length

Cleveland

Cleveland C33378 HSS End Mill 1.125 in Dia 4 in Cut

SKU CH-K9BP-06BW4

High-speed steel end mill with a 1.125 in diameter and 4 in cutting length for milling operations

  • TypeMilling
  • High-speed steel withstands heat during heavy milling cuts
  • 125 in diameter matches standard tooling requirements
  • Four-inch cutting length reaches deep cavities
  • Weldon flat shank locks securely in holders
  • Uncoated surface suits general-purpose ferrous work

Cleveland HSS End Mill 1.125 in

The Cleveland C33378 is a square end mill made from high-speed steel for general milling tasks. It suits machinists and maintenance teams who need a reliable uncoated cutter for slotting or profiling in ferrous and non-ferrous metals.

Weldon flat shank installation

The 1 in shank features a Weldon flat that locks into a standard end-mill holder with a set screw. Tighten the screw firmly on the flat to prevent pull-out; an undersized holder or a worn flat can cause vibration and poor surface finish.

High-speed steel cutting limits

High-speed steel wears faster than carbide when run at high speeds or in abrasive alloys. The 4 in length of cut and 6 1/2 in overall length restrict use to machines with adequate spindle reach and rigidity; deep pockets or high-material-removal rates may exceed the tool's practical capability.

Highlights

  • High-speed steel withstands heat during heavy milling cuts
  • 125 in diameter matches standard tooling requirements
  • Four-inch cutting length reaches deep cavities
  • Weldon flat shank locks securely in holders
  • Uncoated surface suits general-purpose ferrous work

Specifications

BrandCLEVELAND
TypeMilling

Questions about this item

How can I confirm the end mill is cutting correctly after installing it in the holder?

Check that the 1 in Weldon flat seats fully in the holder set screw, then run a test cut and verify the 1.125 in diameter and 4 in length of cut match the workpiece dimensions without chatter.

What comes with the C33378 end mill and what must I supply separately?

The box contains the single HSS square end mill with 1 in shank and Weldon flat; you must provide the tool holder, collet or mill chuck, cutting fluid if desired, and the milling machine itself.

Which version of this Cleveland end mill should I choose for a 1.125 in diameter slot?

The C33378 is the only model listed with a 1.125 in milling diameter, 4 in length of cut, 1 in shank and Weldon flat, so select this part when those exact dimensions are required.

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