Robbjack B-333-07 Ball End Mill 0.2188 in 3 Flute Carbide

Product Description

The ROBBJACK B-333-07 is a solid carbide ball end mill designed for precision milling of cast iron and non-ferrous metals. Part of the B-333 Series Tuffy Grade carbide line, it features a 0.2188-inch mill diameter, three helical flutes, and a 30-degree medium helix angle. The ball nose geometry produces a 0.1094-inch nose radius, making it well suited for contour milling, profiling, and finishing passes where accurate surface generation is required. Licensed machinists and CNC mill operators working in job shops or manufacturing environments are the primary users of this tool.

This end mill is configured as a single-end, right-hand cutting tool with a straight cylindrical shank. It is rated for both roughing and finishing operations in cast iron and non-ferrous metal workpieces. The 0.625-inch length of cut and 2.5-inch overall length position this as a standard-length tool appropriate for general-purpose milling setups where extended reach is not required. The uncoated bright finish keeps the tool ready to run as delivered without additional prep.

Key Features

• Solid carbide Tuffy Grade construction for rigidity and wear resistance
• Ball nose geometry with 0.1094-inch nose radius for contour and profile milling
• Three helical flutes with 30-degree medium helix angle for efficient chip evacuation
• Right-hand cut and right-hand flute direction for standard CNC and manual mill spindles
• Uncoated bright finish suitable for cast iron and non-ferrous materials
• Single-end configuration with straight cylindrical shank for direct collet or chuck mounting

Compatibility

Designed for use in standard milling machines and CNC machining centers with a 1/4-inch collet or end mill holder. Primary workpiece materials are cast iron and non-ferrous metals per Series B-333 application ratings.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Power down and lock out the spindle before inserting or removing the tool. Seat the shank fully into a clean, undamaged 1/4-inch collet or holder and torque to the tool holder manufacturer specification. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator before committing to a production cut.