4-Inch Cylinder Flex-Hone 180 Grit - HD Block GBD4 - Brush Research

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

Key Features

• Flexible Honing Technology: Utilizes flexible abrasive globules (180 grit Silicon Carbide) to deliver a uniform, controlled finish across the entire cylinder bore, ensuring consistent results in critical engine reconditioning tasks. This abrasive is suitable for mild steel, stainless steel, and cast iron.
• Self-Centering Operation: Engineered for automatic alignment within the bore, minimizing setup time and reducing the risk of improper honing. This self-centering and self-compensating design improves productivity while achieving better quality results.
• Heavy-Duty Construction: Built by Brush Research for professional longevity, this flex hone 4 inch tool withstands 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 crosshatch pattern, crucial for improved oil retention, reduced friction, and enhanced component lifespan.

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)