Micro 100 QBB-290500X Boring Bar Solid Carbide Right Hand

Product Description

The MICRO 100 QBB-290500X is a solid carbide boring bar designed for internal diameter boring operations on CNC lathes and manual turning centers. With a minimum bore diameter of 0.29 inches and a maximum bore depth of 0.5 inches, this right-hand cutting tool handles tight-tolerance small-bore work with the rigidity and wear resistance that solid carbide construction provides. The 5/16-inch shank diameter keeps the tool compact and well-suited to sub-half-inch bore applications. At 2 inches overall length and a 0.005-inch corner radius, it is built for precision finish passes as well as light roughing in small bores.

This boring bar is used in precision machining environments including job shops, tool rooms, and production turning operations. It is suited for residential or commercial machine shop use where small-diameter internal turning is required. The right-hand cutting direction is the standard orientation for conventional lathe setups. Machinists working in medical, aerospace, or general manufacturing where close-tolerance bores are common will find this tool appropriate for those finishing operations.

Key Features

• Solid carbide construction for high rigidity and extended tool life in small-bore applications
• Minimum bore diameter of 0.29 inches enables work in tightly dimensioned internal features
• Maximum bore depth of 0.5 inches suits through and blind bore operations at this diameter range
• 0.005-inch corner radius provides a controlled edge geometry for finish-quality surface results
• 5/16-inch shank diameter fits standard small-bore toolholders and quick-change systems
• Right-hand cutting direction for conventional lathe and turning center setups

Compatibility

Designed as an OEM-style replacement or direct-fit boring bar for toolholding systems accepting a 5/16-inch shank diameter in right-hand boring bar configurations.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool overhang and shank clamping torque. Power down and lock out the spindle before inserting or removing the boring bar from the toolholder. Minimize tool overhang to reduce deflection and chatter, particularly at this bore diameter range. Confirm proper tool height alignment to centerline before taking the first cut.