Cleveland C33130 Square End Mill 11/16 in 4 Flute Hss Ticn

Product Description

The CLEVELAND C33130 is a double-end, four-flute square end mill ground from high speed steel and finished with a TiCN coating. It carries an 11/16-inch (0.6875 inch) cutting diameter with a 1-5/8-inch length of cut and a 3/4-inch straight-cylindrical shank with a Weldon flat for positive drive. Overall length is 5-5/8 inches. The right-hand cut, right-hand spiral flute geometry runs at a 30-degree helix angle, promoting efficient chip evacuation and surface finish. The centercutting design allows plunge entry. Licensed machinists and toolroom operators are the primary users of this tool in production and job-shop environments.

This end mill is suited for milling operations on cast iron, non-ferrous metals, and steel. The HD-4C series is built for regular-length applications where rigidity and tool life in ferrous and non-ferrous workpieces are priorities. Typical applications include peripheral milling, slotting, and light plunge cuts in CNC machining centers and manual knee mills. The double-end configuration extends usable tool life by providing two cutting ends per shank.

Key Features

• TiCN finish increases surface hardness and lubricity compared to uncoated HSS, extending tool life in steel and cast iron
• Four-flute, spiral design with 30-degree helix angle for balanced cutting forces and improved finish
• Centercutting geometry permits direct plunge entry without a pre-drilled pilot hole
• Double-end construction provides two usable cutting ends per tool
• Weldon flat on straight-cylindrical shank prevents pullout under heavy side loads
• Right-hand cut and right-hand flute direction compatible with standard spindle rotation

Compatibility

Rated for primary workpiece materials including cast iron, non-ferrous metals, and steel (material codes K, N, and P). Fits any spindle or toolholder accepting a 3/4-inch straight shank with Weldon flat. Part of the CLEVELAND HD-4C series of regular-length square end mills.

Installation Notes

Install in a side-lock or Weldon-flat holder torqued per the toolholder manufacturer specifications to prevent axial pullout. Confirm spindle speed and feed rate against published HSS cutting data for the specific workpiece material before engaging the cut. Inspect the cutting edges under magnification before use and do not run a chipped or worn end mill. Follow all machine guarding and lockout/tagout procedures when changing tooling.