Accupro MB040150 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO MB040150 is a solid carbide boring bar designed for precision internal boring operations on small-diameter features. Built from submicron-grade carbide with a bright finish, it delivers consistent cutting performance in tight-tolerance applications. The bar has a minimum bore diameter of 0.04 inches and a maximum bore depth of 0.15 inches, making it suited for fine detail work where standard tooling cannot reach. The 1/8-inch shank diameter keeps the setup compact, and the 1.5-inch overall length fits a range of small boring heads and tool holders. Machinists and tool-and-die professionals install this bar in CNC turning centers and manual lathes for finish boring passes on small bores.

This boring bar is intended for precision machining environments where small-bore internal features require tight dimensional control. It is well-suited for finish boring operations in metals and other machinable materials. The right-hand cutting direction is the standard orientation for conventional lathe and boring setups. Its compact geometry makes it a practical choice for watch-parts machining, medical device components, aerospace fittings, and other small-feature work where bore diameter and depth tolerances are critical.

Key Features

• Submicron solid carbide construction for wear resistance and edge retention
• Minimum bore diameter of 0.04 inches for very small internal features
• Maximum bore depth of 0.15 inches
• Right-hand cutting direction for standard lathe orientation
• Bright finish coating
• 1/8-inch shank diameter with 1.5-inch overall length for compact tool setups

Compatibility

Designed as an OEM-style replacement and direct-fit boring bar for tool holders and boring heads accepting a 1/8-inch shank diameter in CNC turning centers and manual lathes.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank firmly in the tool holder to the holder manufacturer's specified clamping method to prevent chatter and tool pullout. Verify bore diameter and depth setup with gauging before committing to a finish pass.