Brush Research Mfg. BC18M800CD Flexible Cylinder Hone 800 Grit

Product Description

The BRUSH RESEARCH MFG. BC18M800CD is a flexible cylinder hone designed for finishing and deburring small-diameter bores in hard materials including carbide, ceramic, and hardened tool steel. It uses diamond abrasive at 800 grit, an extra-fine grade that removes minimal material while leaving a consistent, controlled surface finish. The hone has an overall length of 8 inches and an abrasive length of 2.5 inches. Maximum bore diameter is 0.709 inches (18 mm). The 0.19-inch shank diameter allows it to chuck into standard rotary tools, drill presses, or CNC equipment. Maximum operating speed is 1,000 RPM. Machinists, tool and die makers, and precision mechanics are the typical end users.

This hone is suited for finishing passes on tight bores where conventional abrasive tooling would load or glaze. Carbide dies, ceramic bushings, hardened steel guide bores, and similar precision components are common application targets. The flexible ball-style construction allows the abrasive globules to conform to the bore wall rather than requiring precise tool alignment, reducing setup time in production and repair environments. It is appropriate for both manual and machine operation at controlled speed.

Key Features

• Diamond abrasive at 800 grit provides an extra-fine finish on hard, wear-resistant materials
• Maximum bore diameter of 0.709 inches (18 mm) suits small-bore precision work
• Abrasive length of 2.5 inches delivers consistent contact across short bore depths
• 8-inch overall length allows reach into recessed or deep-set bore locations
• 0.19-inch shank diameter fits standard collets, drill chucks, and rotary tool holders
• Rated to 1,000 RPM maximum for controlled, low-heat finishing passes
• Effective on carbide, ceramic, and hardened tool steel where conventional abrasives fail

Compatibility

Designed for use on carbide, ceramic, and hardened tool steel bores up to 0.709 inches in diameter. Compatible with standard rotary tools, drill presses, and CNC spindles accepting a 0.19-inch shank.

Installation Notes

Secure the shank firmly in the tool holder and verify runout before operation. Do not exceed 1,000 RPM. Use a compatible cutting fluid or coolant appropriate for the workpiece material to extend abrasive life and prevent heat buildup. Inspect the hone for worn or damaged abrasive globules before each use and replace if degraded to avoid inconsistent bore finish.