Brush Research GBD41432 Flex-Hone Tool Bore Grit Silicon Carbide Engine Cylinder Hone - 4-1/4 320

The Brush Research Flex-Hone Tool is a precision cylinder finishing tool designed for surface finishing, deburring, and plateau honing applications across automotive, aerospace, marine, manufacturing, and industrial sectors. This heavy-duty model features silicon carbide abrasive with 320 grit for fine finishing operations on bores ranging from 4 to 4-1/4 inches in diameter.

Key Specifications:

• Bore capacity: 4 to 4-1/4 inches
• Tool dimensions: 4-1/4" diameter x 13-1/2" length
• Abrasive type: Silicon carbide
• Grit size: 320 (fine finishing)
• End marking color: White for easy identification
• ISO 9001 compliant manufacturing

Surface Finishing Capabilities:

The Flex-Hone Tool excels at reducing Ra, Rk, and Rpk surface roughness values while maintaining Rvk and oil retention volume characteristics. Its flexible construction with abrasive globules bonded to resilient filaments creates a controlled finishing action that improves surface texture without removing excessive material. This allows subsequent sizing tools to work more efficiently and accurately.

Deburring Cross-Drilled Holes:

The self-centering, self-aligning design makes the Flex-Hone ideal for removing burrs from intersecting cross-drilled holes, creating clean, radiused intersections. The tool can be used in-line during machining operations or as a secondary finishing process. For optimal results, rotate and stroke the tool clockwise for several strokes, then reverse direction and repeat counter-clockwise to create a symmetrical deburring pattern.

Plateau Finishing:

This tool creates the ideal plateau finish by removing peaks from prior machining operations while establishing a cross-hatch pattern. This finish allows rings and seals to seat properly without edge damage, improves lubrication retention, reduces seepage in hydraulic and pneumatic systems, and extends seal life.

Applications:

Suitable for automotive engine work, military and aerospace components, marine engines, firearms, musical instruments, fluid power systems, hydraulic cylinders, aluminum extrusion dies, and earth-moving equipment. The tool works effectively on a wide range of base materials where fine surface finishing is required.