Robbjack SS-2-028 Square End Mill 0.028 in 2 Flute Carbide

Product Description

The ROBBJACK SS-2-028 is a solid carbide square end mill designed for precise milling in tight-tolerance applications. Part of the SS-2 Series, this stub-length, two-flute tool features a 0.028-inch cutting diameter and a 0.042-inch length of cut. The straight cylindrical shank measures 0.125 inches in diameter, and the overall length is 1.5 inches. Built from ROBBJACK Tuffy-grade solid carbide, this end mill delivers the rigidity and wear resistance required for accurate cuts in small-feature machining. It is uncoated and intended for use by machinists and tooling professionals running precision CNC or manual milling operations.

This end mill is suited for fine-detail milling work where a very small cutting diameter is required, such as engraving, slotting, and contouring in small cavities. The stub-length configuration reduces deflection and improves rigidity at small diameters. The centercutting design allows plunge entry, expanding its usefulness in multi-axis machining setups. Right-hand cut and right-hand spiral flute geometry are standard for conventional milling spindle rotation.

Key Features

• 0.028-inch cutting diameter with a tight mill diameter tolerance of plus or minus 0.0005 inches
• Solid carbide Tuffy-grade construction for rigidity and wear resistance
• 2-flute, spiral flute design with a 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge entry into workpiece material
• Stub-length configuration minimizes deflection at small diameters
• Right-hand cut and right-hand flute for use with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for CNC and manual milling machines accepting a 0.125-inch straight cylindrical shank, within the ROBBJACK SS-2 Series lineup.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully powered down and locked out before changing tooling. Verify collet or chuck bore matches the 0.125-inch shank diameter before securing. Handle micro-diameter carbide end mills with care to avoid chipping the cutting edges during setup.