4" Cylinder Flex-Hone 180 Grit - HD Block - Brush Research

The Brush Research GBD4 4-Inch Cylinder Flex-Hone (180 Grit - HD Block) is a specialized and robust tool engineered for professional technicians and mechanics. This 4-inch cylinder hone is designed to deliver a superior surface finish in automotive and industrial cylinder applications, effectively deglazing and conditioning cylinder walls for optimal ring seating and lubrication. Its flexible design, often recognized as a 4-inch ball hone or 4in ball hone, ensures a consistent crosshatch pattern critical for engine performance and longevity.

Key Features

• Flexible Honing Technology: Utilizes flexible abrasive globules made of 180 grit Silicon Carbide to provide a uniform, controlled finish across the entire cylinder bore. This abrasive is suitable for mild steel, stainless steel, and cast iron, ensuring consistent results in critical engine reconditioning tasks.
• Self-Centering Operation: Engineered for automatic alignment within the bore, this self-centering and self-compensating design minimizes setup time and reduces the risk of improper honing, enhancing productivity and quality.
• Heavy-Duty Construction: Built by Brush Research for professional longevity, this flex hone 4 inch tool is designed to withstand demanding use in high-volume automotive and industrial settings. The GBD series tools feature a longer abrasive length for increased durability.
• Optimized Surface Finish: Creates an ideal plateau finish and a uniform crosshatch pattern, which is crucial for improved oil retention, reduced friction, enhanced component lifespan, and proper piston ring seating and sealing.

Applications

• Automotive Engine Rebuilding: Essential for deglazing and conditioning engine cylinders to prepare them for new piston rings, promoting proper seating and sealing. This tool is ideal for restoring smooth surfaces for efficient piston operation.
• Industrial Cylinder Maintenance: Suitable for a range of heavy-duty industrial applications requiring precise cylinder wall finishing and surface preparation.
• Professional Machine Shops: A standard tool for cylinder reconditioning, bore refinement, and maintaining tight tolerances in precision machining operations.

Specifications

• Manufacturer: Brush Research Manufacturing Co., Inc.
• Model Number: GBD4
• Weight: 1.9 lbs
• Dimensions: 13.9 x 5.1 x 5.1 inches
• Grit Size: 180 Grit
• Product Type: HD Block Cylinder Flex-Hone
• Size: 4 inches (designed for nominal bore sizes between 3.75 IN and 4.000 IN)