BC 2 7/8" 73MM 240SC FLEX HONE - Brush Research

The Brush Research BC 2 7/8" 73MM 240SC FLEX HONE (Model: BC27824) is a professional-grade, resilient honing tool engineered to deliver superior surface finishing and deburring in a variety of automotive and industrial applications. This flexible cylinder hone is designed for bores with a nominal diameter of 2.751" to 2.875" (73mm), providing a controlled, low-temperature abrading process that enhances component performance and longevity.

Key Features

• Silicon Carbide Abrasive (240 Grit): Features 240 grit silicon carbide (SC) abrasive globules, ideal for achieving a consistent plateau finish on mild steel, stainless steel, cast iron, aluminum, and other softer ferrous materials.
• Self-Centering Design: Its unique flexible construction ensures the tool is self-aligning, self-centering, and self-compensating for wear, allowing for uniform surface treatment even in blind holes or cross-drilled bores.
• Optimal Plateau Finish: Creates a true plateau finish, removing loose, torn, and folded metal while leaving a clean, functional surface free of imperfections.
• Oil-Retaining Crosshatch Pattern: Develops an effective, non-directional crosshatch pattern essential for optimal lubrication and extended component life in engine cylinders.
• Durable Construction: Built by Brush Research, a trusted name in surface finishing, ensuring reliability and professional-grade durability for demanding workshop environments.

Applications

This versatile Flex-Hone tool is indispensable for professional technicians and mechanics seeking to improve the internal surface finish of bores and cylinders. It is commonly used for deglazing cylinder walls in engine rebuilds, enhancing piston ring seal, and reducing friction for improved engine performance. Additionally, the BC27824 is effective for deburring cross-drilled holes and slots, and for surface finishing hydraulic and pneumatic cylinders, brake cylinders, wheel cylinders, lifter bores, and valve guides. It can also improve contact surfaces for main bearing tunnels and conrod big-end tunnels, facilitating better heat dissipation.

Specifications

• Bore Diameter Range: 2.751" - 2.875" (73mm)
• Abrasive Type: Silicon Carbide (SC)
• Grit: 240
• Abrasive Length: 3.00 inches
• Overall Length (OAL): 8 inches