Osg HP441-5512 Square End Mill 0.5512 in 4 Flute Carbide

Product Description

The OSG HP441-5512 is a solid carbide square end mill designed for high-performance milling applications in ferrous and non-ferrous materials. It features a 0.5512-inch (14 mm) mill diameter with a 1.1811-inch (30 mm) length of cut, delivering deep slotting and peripheral milling capability in a compact 89 mm overall length. The TiAlN coating provides thermal resistance and extended tool life in dry or semi-dry machining environments. Micrograin carbide construction ensures rigidity and edge retention under demanding cutting conditions. This tool is installed and operated by machinists and CNC programmers in production and job-shop environments.

The HP441-5512 is suited for milling steel, alloy steel, stainless steel, and similar workpiece materials in vertical machining centers and CNC milling machines. The centercutting geometry allows plunge entry as well as conventional and climb milling passes. The 35-degree helix angle and spiral flute design promote efficient chip evacuation and reduced cutting forces, making this end mill effective in both roughing and finishing operations at moderate to high feed rates.

Key Features

• 0.5512-inch (14 mm) diameter with 1.1811-inch (30 mm) length of cut for deep-cavity milling
• 4-flute configuration balances material removal rate with chip clearance
• TiAlN finish provides heat resistance and extended tool life in dry machining
• Micrograin solid carbide substrate for rigidity and sharp, durable cutting edges
• 35-degree helix angle with spiral flutes for smooth chip evacuation
• Centercutting design allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute — standard orientation for CNC mill spindles

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for CNC vertical machining centers and manual milling machines accepting a 14 mm shank diameter, within the OSG HP441 series.

Installation Notes

Installation requires a milling machine with a compatible collet or end mill holder sized for a 14 mm shank. Ensure the tool is seated fully in the holder and the collet nut is torqued to the machine or toolholder manufacturer's specification before operation. Verify spindle speed and feed rate against material-specific cutting data for TiAlN-coated carbide end mills before running the first pass. Inspect the cutting edges for chipping or wear at regular intervals during production runs.