Sgs 00861 Ball End Mill 0.055 in 2 Flute Solid Carbide

Product Description

The SGS 00861 is a solid carbide ball end mill designed for precision milling of contoured surfaces, slots, and complex 3D profiles. It features a 0.055-inch cutting diameter with a 0.165-inch length of cut (LOC) and a 30-degree helix angle that promotes smooth chip evacuation and reduces cutting forces. The two-flute geometry provides adequate chip clearance when working in softer metals, plastics, and composites. The micrograin carbide substrate delivers hardness and edge retention at small diameters where tool deflection and breakage are primary concerns. This tool is used by machinists and toolmakers on CNC milling machines and machining centers where fine-detail work requires tight tolerances and consistent performance.

The SGS 00861 is suited for precision profiling, die and mold work, and finish passes on contoured features in ferrous and non-ferrous materials. Its compact diameter makes it appropriate for engraving, fine-feature pocket work, and intricate part geometries where larger tooling cannot reach. The uncoated bright finish is compatible with a broad range of materials and cutting fluid chemistries. It is a single-end tool, meaning the cutting geometry is on one end only, and it is not regrindable to the same specification once worn. Machinists working in job shops, aerospace component manufacturing, and precision medical part production will find this tool applicable to their fine-tolerance requirements.

Key Features

• 0.055-inch ball nose cutting diameter with a diameter tolerance of +0.0000 to -0.0008 inches for tight dimensional control
• Micrograin solid carbide construction provides hardness and wear resistance at small tool diameters
• 30-degree helix angle promotes smooth chip flow and reduces cutting force at the tip
• Two-flute spiral design balances chip clearance and cutting edge strength for small-diameter work
• Uncoated bright finish suits a wide range of materials and is compatible with most cutting fluids
• 1/8-inch shank diameter fits standard collets and tool holders commonly found in CNC machining centers

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide ball end mill for CNC machining centers and manual mills equipped with standard 1/8-inch collet or tool holder systems.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 1/8-inch shank fully into a properly sized collet or end mill holder and torque to the tool holder manufacturer's specification. At small diameters, minimize runout by using a precision collet; excessive runout accelerates edge chipping and reduces tool life.