Iscar 6404226 Profile Boring Bar Submicron Solid Carbide

Product Description

The ISCAR 6404226 is a solid carbide profile boring bar designed for small-diameter internal turning and profiling operations on CNC lathes and machining centers. Built from submicron-grade carbide with a TiAlN and TiN finish coating and manufactured to ISCAR grade IC908, this bar handles demanding bore finishing tasks where rigidity and wear resistance are critical. It features a right-hand cutting direction, a minimum bore diameter of 0.1575 inches (4.00 mm), a maximum bore depth of 0.7874 inches (20.00 mm), and an overall length of 1.3386 inches (34.00 mm). The 0.006-inch corner radius makes it well suited for profiling contoured internal surfaces with consistent edge integrity.

This profile boring bar is intended for precision internal machining applications in production and job-shop environments. The 4.00 mm shank diameter and compact overall length are sized for tight-bore access on small parts common in aerospace, medical, and general precision machining. The 47-degree bar end angle supports clearance in profiling cuts where a standard straight bar would interfere. Installation and use require a compatible boring bar holder or micro-boring system with a 4.00 mm bore diameter. Licensed machinists and CNC setup technicians are the typical end users.

Key Features

• Submicron solid carbide construction for high rigidity and edge retention in small bores
• TiAlN and TiN dual coating extends tool life in ferrous and hardened workpiece materials
• ISCAR IC908 grade optimized for continuous and interrupted cuts in steel and stainless
• Right-hand cutting direction with a 47-degree bar end angle for profiling clearance
• 0.006-inch corner radius supports consistent surface finish on contoured internal profiles
• Compact 1.3386-inch OAL with 4.00 mm shank suits micro-boring and small-part applications

Compatibility

Designed for use with boring bar holders and micro-boring systems accepting a 4.00 mm shank diameter. No specific machine or toolholder model numbers were provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the CNC control is placed in an e-stop or tool-change state before inserting or removing the bar. Confirm the holder bore diameter matches the 4.00 mm shank before clamping to avoid runout or bar damage. Follow the toolholder manufacturer torque guidelines for set screws; do not overtighten on the carbide shank.