Internal Tool 18-1245 Internal Boring Bar Solid Carbide

Product Description

The INTERNAL TOOL 18-1245 is a solid carbide internal boring bar designed for precision small-bore machining operations. Built from micrograin carbide and coated with AlTiN via a PVD process, it delivers hardness and thermal resistance across a wide range of workpiece materials. The right-hand cutting direction suits standard lathe setups. It handles a minimum bore diameter of 0.2000 inches with a maximum bore depth of 0.5000 inches, making it well suited for tight, shallow bores where rigidity and dimensional accuracy are critical. This tool is used by machinists and toolroom operators in production and job-shop environments.

The 18-1245 is applicable across a broad spectrum of workpiece materials including plastic, magnesium, aluminum, copper, brass, bronze, cast iron, steel, titanium, stainless steel, and nickel. Its 2.5-inch overall length and 0.5000-inch projection make it appropriate for compact setups on CNC lathes, manual lathes, and boring mills where access to small internal diameters is required. The Series 18 designation places it within INTERNAL TOOL's line of miniature solid carbide boring bars intended for precision finish boring.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention in small-bore applications
• AlTiN coating applied via PVD process for elevated hardness and oxidation resistance at elevated cutting temperatures
• Right-hand cutting direction compatible with standard lathe spindle rotation
• Minimum bore diameter of 0.2000 inches enables machining of small, precise internal features
• Maximum bore depth of 0.5000 inches suits shallow internal bore requirements
• Compatible with a wide range of workpiece materials from nonferrous alloys to stainless steel and titanium

Compatibility

Designed for use in CNC and manual turning applications requiring internal boring of holes with a minimum diameter of 0.2000 inches. Suitable for workpiece materials including plastic, magnesium, aluminum, copper, brass, bronze, cast iron, steel, titanium, stainless steel, and nickel.

Installation Notes

Installation and setup should be performed by a qualified machinist. Secure the boring bar in a rigid toolholder or boring bar holder sized appropriately for the shank diameter, ensuring minimal overhang to reduce chatter. Power down and lock out the spindle before mounting or adjusting the tool. Verify runout and tool centerline height before taking a cut.