Micro 100 QBT-3601000 Solid Carbide Boring Bar 3/8in Shank

Product Description

The MICRO 100 QBT-3601000 is a solid carbide boring bar designed for internal diameter machining on CNC lathes and manual turning centers. It features a 0.360 inch minimum bore diameter and handles bore depths up to 1 inch, making it well suited for tight-tolerance finishing passes in small-diameter bores. The 3/8 inch shank diameter provides rigid tooling engagement, and the 0.0060 inch corner radius supports clean surface finishes in both steel and non-ferrous materials. At 2.5 inches overall length, the bar is compact and direct-mounted without extension. Machinists and toolroom technicians install this bar as a standard internal turning tool.

This boring bar is intended for right-hand cutting operations on turning equipment where small-bore internal features require precise diameter control. It is applicable in job shop and production environments handling components that require finished bores in the 0.360 inch range. Typical applications include bearing seats, hydraulic valve bodies, and similar precision-machined bores where surface finish and diameter accuracy are critical. The solid carbide construction supports higher cutting speeds compared to high-speed steel alternatives.

Key Features

• Solid carbide construction for rigidity and wear resistance at elevated cutting speeds
• 0.360 inch minimum bore diameter for small internal features
• 1 inch maximum bore depth for moderate-depth internal turning
• 3/8 inch shank diameter for standard tool post and boring head compatibility
• 0.0060 inch corner radius for clean surface finish on bore walls
• Right-hand cutting direction for standard lathe spindle rotation

Compatibility

Designed as a direct-mount internal turning tool compatible with tool holders and boring heads accepting a 3/8 inch round shank on CNC and manual lathes.

Installation Notes

This boring bar is installed by machinists using a tool post, turret holder, or boring head sized for a 3/8 inch shank. Secure the shank with adequate clamping length to minimize overhang and chatter. Power down and lock out the spindle before mounting or adjusting the tool. Follow machine tool manufacturer guidelines for tool projection limits relative to bore depth to maintain rigidity during the cut.