Harvey Tool 74355-C3 Ball End Mill 1.40mm 4 Flute Carbide

Product Description

The HARVEY TOOL 74355-C3 is a miniature solid carbide ball end mill designed for precision milling in ferrous materials. With a 1.40 mm (0.0550 inch) cutting diameter and a 0.1650-inch reach length, this stub-length tool is built for tight-clearance work where a standard-length tool cannot reach. The 4-flute geometry and 30-degree right-hand spiral helix support both roughing and finishing operations in a single tool. An AlTiN PVD coating improves heat resistance and tool life when cutting steel, stainless steel, and cast iron. The 0.1250-inch straight cylindrical shank mounts in standard collet chucks or tool holders.

This end mill is suited for CNC machining centers and milling machines running precision work in steel, stainless steel, and cast iron. The stub standard series designation means the tool prioritizes rigidity over reach, making it a practical choice for contour milling, die work, 3D surface finishing, and slot milling in hard or abrasive materials. It is a single-end tool intended for professional machining environments where dimensional accuracy and surface finish are critical.

Key Features

• 1.40 mm (0.0550 inch) ball cutting diameter with a 0.0275-inch nose radius
• 4-flute right-hand spiral design supports roughing and finishing in one tool
• 30-degree helix angle promotes efficient chip evacuation in ferrous materials
• AlTiN PVD coating extends tool life in steel, stainless steel, and cast iron
• Stub-length geometry maximizes rigidity in tight-clearance applications
• Solid carbide construction for dimensional stability and wear resistance

Compatibility

Designed for use in CNC milling applications targeting steel, stainless steel, and cast iron workpieces. Compatible with standard 1/8-inch collet chucks and tool holders. Part of the HARVEY TOOL Miniature End Mills - Ball - Stub and Standard series.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and locked before changing tooling. Seat the 0.1250-inch straight shank fully into the collet or tool holder and torque the retention nut according to the tool holder manufacturer specifications. Verify runout with a dial indicator before commencing a production cut, particularly given the small diameter of this tool.