Helical Solutions 01690 3/4in 3-flute Carbide End Mill

Product Description

The HELICAL SOLUTIONS 01690 is a 3-flute solid carbide square end mill designed for high-performance milling in aluminum and non-ferrous materials. With a 0.75-inch mill diameter and a 35-degree right-hand helix, this tool generates efficient chip evacuation and clean, precise cuts in demanding production environments. The centercutting geometry allows both plunge and peripheral milling operations. A bright, uncoated finish suits aluminum applications where coatings may cause material adhesion. This end mill is a professional-grade cutting tool installed and operated by machinists and CNC programmers in job shop and production settings.

The 01690 is optimized for aluminum milling applications in vertical machining centers, horizontal mills, and CNC routers running right-hand spindles. The 3-flute design balances chip load and surface finish, making it well-suited for slotting, profiling, and pocketing operations in aluminum billet, plate, and extrusion stock. The 3.25-inch length of cut provides extended reach for deep-pocket and tall-wall features without requiring a long-reach tool holder in many setups. The straight-cylindrical shank seats directly in standard ER or end mill holders sized for 3/4-inch bore.

Key Features

• Solid carbide construction for rigidity and wear resistance in high-speed aluminum cutting
• 35-degree right-hand helix promotes aggressive chip evacuation and reduces built-up edge
• 3-flute configuration balances material removal rate with chip clearance
• Centercutting geometry enables direct plunge entry into workpiece material
• 3.25-inch length of cut supports deep-pocket and tall-wall milling operations
• Bright, uncoated finish reduces aluminum adhesion compared to TiN or TiAlN coatings

Compatibility

Designed as an OEM-style replacement or direct-purchase solid carbide end mill for use in standard 3/4-inch bore end mill holders, collet chucks, and ER collet systems on CNC machining centers and manual knee mills running right-hand rotation.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool changer or quill is locked before mounting or removing the end mill. Seat the straight shank fully in the tool holder and torque set screws or collet nuts to the holder manufacturer's specification. Confirm runout with a dial indicator before beginning a production cut, as excessive runout accelerates edge wear and degrades surface finish.