Sgs 77124 Square End Mill 0.25 in 7 Flute Solid Carbide

Product Description

The SGS 77124 is a solid carbide square end mill designed for precision milling in demanding cutting applications. Built from micrograin solid carbide with a titanium nitride (TiN) coating, it delivers extended tool life and thermal resistance in high-speed operations. The 77124 features a 0.25-inch diameter, seven flutes, and a 1-inch length of cut with a 3-inch overall length, placing it in the extra-long category for reach into deeper pockets and slots. The variable helix geometry reduces chatter and improves chip evacuation. This tool is intended for use by machinists and CNC operators working in production or job-shop environments.

This end mill is suited for milling a broad range of workpiece materials, including hardened steels, cast irons, stainless steels, non-ferrous metals, structural steels, and high-temperature alloys, as indicated by primary material codes H, K, M, N, P, and S. The extra-long reach makes it well suited for deep-pocket milling, stepped features, and applications where standard-length end mills cannot reach. The straight-cylindrical shank fits standard ER and hydraulic toolholders with a 0.25-inch bore.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• Titanium nitride (TiN) coating for improved surface hardness and heat resistance
• Seven-flute design increases feed rate capability and surface finish quality
• Variable helix reduces vibration and chatter during aggressive cuts
• Extra-long 3-inch overall length with 1-inch length of cut for deep-reach applications
• Right-hand cut, right-hand spiral flute with straight-cylindrical shank

Compatibility

Compatible with workpiece material codes H, K, M, N, P, and S, covering hardened steels, cast irons, stainless steels, non-ferrous metals, structural steels, and high-temperature alloys. Fits standard 0.25-inch bore toolholders. Part of the SGS Series 77 end mill family.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the toolholder bore is clean and free of debris before seating the shank. Verify runout with a dial indicator after securing in the collet or chuck. Follow machine tool manufacturer torque specifications for collet nuts and confirm spindle direction matches the right-hand cut orientation before engaging the workpiece.