BC 2-7/8" (73MM) Brake Cylinder Flex Hone Grit - Brush Research

The Brush Research BC27812 Brake Cylinder Flex Hone is a professional-grade 2-7/8" (73mm) silicon carbide tool engineered for precise surface finishing in automotive and industrial hydraulic systems. This tool ensures a controlled cut and a consistent plateau finish, crucial for optimizing sealing, promoting lubrication retention, and extending the operational life of critical brake and hydraulic cylinder components.

Key Features

• Precise Bore Sizing: The 2-7/8" (73 mm) nominal diameter ensures constant wall pressure and full-contact honing for superior, consistent bore finishing results.
• 120 Grit Silicon Carbide: Delivers a balanced cut for efficient deglazing, surface conditioning, and light cleanup without excessive material removal or bore distortion.
• Self-Centering Design: Flexible nylon filaments with abrasive globules conform to minor bore irregularities and cross-holes, ensuring a uniform finish and minimizing the risk of edge damage.
• Optimal Plateau Finish: Produces an ideal oil-retaining cross-hatch pattern that enhances ring and seal performance, helping to reduce leakage and improve overall component service life.
• Drill-Driven Versatility: Operates efficiently with a standard hand drill or drill press at appropriate RPMs, offering controllable cutting action suitable for both service bays and machine shops.
• Professional-Grade Durability: Made in the USA, this Brush Research BC 2-7/8" (73MM) Brake Cylinder Flex Hone is built for robust, repetitive use in demanding automotive and industrial environments.

Applications

This Flex Hone is ideal for honing and finishing brake master cylinders and wheel cylinders on passenger cars, light trucks, and commercial vehicles with bores near 2-7/8" (73mm). It is also commonly utilized in hydraulic and pneumatic cylinders, valve guides, and other small bores where a controlled surface texture and lubrication retention are critical. Additionally, this tool is suitable for light cross-hole deburring and general cleanup in various machining operations.

Specifications

• Manufacturer: Brush Research
• Model: BC27812
• Nominal Diameter: 2-7/8" (73 mm)
• Abrasive: Silicon carbide, 120 grit
• Weight: 0.45 lb
• Overall Dimensions: 11 x 4.75 x 4 in