Osg 484-9843 Square End Mill 0.9843 in 4 Flute Carbide

Product Description

The OSG 484-9843 is a solid carbide square end mill designed for precision milling operations in metal fabrication, tooling, and machining applications. Built to Series 484 specifications, it features a 0.9843-inch (25 mm) mill diameter and a 2.9921-inch (76 mm) length of cut, placing it in the extra-long reach category for deep-cavity and extended-reach work. The four-flute geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. This tool is center-cutting, allowing plunge entry, and runs right-hand cut with right-hand flute direction. It arrives uncoated and is ready for use or custom coating as required by the application.

The 484-9843 is suited for milling ferrous and non-ferrous materials in vertical machining centers and CNC milling setups. Its extra-long length of cut makes it particularly useful for deep-pocket milling, slot milling, and profiling operations where standard-length end mills cannot reach. The solid carbide construction provides the rigidity needed to maintain tight tolerances at elevated spindle speeds. This tool is appropriate for job shops, tool-and-die operations, and production machining environments.

Key Features

• 0.9843-inch (25 mm) diameter with 2.9921-inch (76 mm) length of cut for deep-reach milling
• Four-flute spiral flute design with 30-degree helix angle for efficient chip flow
• Center-cutting capable — supports direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute configuration for standard CNC spindle use
• Solid carbide construction for high rigidity and wear resistance
• Extra-long length classification for deep-pocket and extended-reach applications
• Uncoated finish — compatible with user-applied coatings or dry cutting setups

Compatibility

Designed for use in standard CNC vertical milling machines and machining centers accepting a 25 mm (0.9843-inch) shank diameter. Verify machine spindle taper, collet size, and drawbar torque specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the control is in a safe state before changing tooling. Use a properly sized collet or end mill holder rated for the 25 mm shank diameter and confirm tool runout with a dial indicator after clamping. Follow the machine tool manufacturer's recommended speeds and feeds for solid carbide end mills at this diameter.