Brush Research Mfg. BC12240AO Flexible Cylinder Hone 240 Grit

Product Description

The BRUSH RESEARCH MFG. BC12240AO is a flexible cylinder hone designed for light material removal, surface finishing, and deburring inside small-bore cylinders. It uses 240-grit aluminum oxide abrasive balls on flexible filaments, producing a controlled crosshatch finish without aggressive stock removal. The abrasive length is 2.5 inches, the maximum bore diameter is 0.5 inches, and the overall length is 8 inches. This tool is suited for machinists, engine rebuilders, and maintenance technicians working on small hydraulic cylinders, pneumatic components, and similar precision bores.

This hone is appropriate for use on aluminum, brass, bronze, and other softer metals. It is well suited to applications where bore geometry must be maintained and surface finish is critical, such as cylinder wall reconditioning or deburring after machining operations. The 240-grit medium grade makes it a practical choice for finish honing rather than aggressive cutting, where the goal is surface preparation rather than significant diameter correction.

Key Features

• 240-grit aluminum oxide abrasive for medium-grade surface finishing
• Maximum bore diameter of 0.5 inches for small precision bore applications
• 8-inch overall length provides reach into recessed cylinder bores
• 2.5-inch abrasive length ensures adequate contact zone coverage
• Maximum operating speed of 1,000 RPM for controlled, safe use in a drill or honing fixture
• Compatible with aluminum, brass, bronze, and softer metals

Compatibility

Designed for use on aluminum, brass, bronze, and softer metals in bores up to 0.5 inches in diameter. Typical applications include small hydraulic cylinders, pneumatic actuators, and precision machined bores requiring finish honing or deburring.

Installation Notes

This tool is installed in a variable-speed drill or dedicated honing fixture and should not exceed 1,000 RPM during operation. Ensure the workpiece is securely fixtured and apply a compatible honing oil or coolant to extend abrasive life and improve finish quality. Power down and lock out any associated equipment before setting up the tool in stationary applications. Do not force the hone into bores smaller than the rated maximum diameter.