YG-1 55598TF 3/4 in 4-flute Carbide End Mill Tialn

Product Description

The YG-1 55598TF is a solid micrograin carbide square end mill designed for high-performance metal removal in ferrous and non-ferrous machining applications. With a 3/4 inch diameter, 3 inch length of cut, and 6 inch overall length, this is an extra-long configuration suited for deep-pocket and extended-reach milling where standard-length tools fall short. The TiAlN coating provides oxidation resistance and thermal hardness retention at elevated cutting temperatures. A 30-degree right-hand spiral helix and four flutes deliver efficient chip evacuation and a strong finish on steel, stainless steel, cast iron, and non-ferrous metals. Right-hand cutting direction with a straight cylindrical shank. This tool is used by machinists and toolroom technicians in CNC milling centers and manual knee mills.

The 55598TF is suited for deep-pocket roughing and finishing operations in steel and stainless steel where a standard-length end mill cannot reach. The extra-long 6 inch OAL and 3 inch LOC make it appropriate for mold and die work, fixture machining, and production runs involving tall workpiece features. It is not a centercutting tool, so plunge cuts require a pilot hole or ramping entry. Secondary workpiece materials include cast iron and non-ferrous metals, making it a versatile general-purpose tool across multiple material grades in job shop and production environments.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention in hard materials
• TiAlN coating for high-temperature performance and extended tool life in steel and stainless steel
• Extra-long 6 inch OAL with 3 inch length of cut for deep-pocket and extended-reach applications
• 30-degree right-hand helix with four flutes for efficient chip evacuation and surface finish
• Straight cylindrical shank with tight tolerances for consistent runout in collet and end mill holders
• Right-hand cutting direction compatible with standard CNC and manual milling setups

Compatibility

Designed for use in standard 3/4 inch collets, end mill holders, and hydraulic or shrink-fit toolholding systems. Primary workpiece material is steel; secondary materials include stainless steel, cast iron, and non-ferrous metals per YG-1 Series E5065 specifications.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank to the full recommended engagement depth in the holder to minimize deflection given the extra-long reach. Because this tool is not centercutting, avoid direct plunge cuts into solid material - use a ramping or helical interpolation entry path instead.