Walter 6412018 Boring Chamfering Profiling Bar Solid Carbide

Product Description

The WALTER 6412018 is a solid carbide boring, chamfering, and profiling bar designed for precision internal machining operations. Built from K10/H30 micrograin solid carbide, it delivers the rigidity and edge retention needed for tight-tolerance small-bore work. The tool features a 2.00 mm minimum bore diameter, a 4.00 mm shank diameter, and an overall length of 24.00 mm, making it well suited for micro-bore applications where tool deflection and vibration must be minimized. The right-hand cutting direction and 8-degree bar end angle support controlled chip evacuation in confined bore geometries. Machinists and tooling engineers working with precision CNC turning or boring centers are the primary users of this tool.

This bar is intended for use in precision internal turning, chamfering, and profiling operations on small-diameter bores. It is applicable in industries such as medical device manufacturing, watchmaking, electronics, and aerospace component machining, where bore diameters in the sub-5 mm range require consistent dimensional accuracy. The maximum bore depth of 0.10 mm and corner radius of 0.05 mm position this tool for finishing and fine-profiling passes rather than heavy stock removal. It is typically run on CNC lathes, Swiss-type turning centers, or multi-axis machining centers equipped with appropriate micro-boring toolholders accepting a 4.00 mm shank.

Key Features

• K10/H30 micrograin solid carbide construction provides high hardness and wear resistance in small-bore applications
• 2.00 mm minimum bore diameter supports micro-bore internal turning and profiling
• 4.00 mm shank diameter for compatibility with standard micro-boring toolholders
• Right-hand cutting direction with 8-degree bar end angle for controlled chip flow
• 0.05 mm corner radius enables fine-detail profiling and finish passes
• 24.00 mm overall length provides reach while maintaining rigidity in confined bores

Compatibility

Designed for use in CNC lathes and turning centers that accept a 4.00 mm shank boring bar, typically in toolholding systems configured for micro-boring operations.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or tooling technician with the machine in a fully stopped and locked-out state per applicable machine safety procedures. The shank should be clamped securely in a compatible toolholder to the manufacturer-specified engagement length to prevent tool pullout during cutting. Avoid applying side loads that exceed the tool geometry design intent, as solid carbide bars are rigid but sensitive to bending forces at small diameters. Inspect the cutting edge under magnification before and after use to detect chipping that could affect bore dimensional accuracy.