FLEX-HONE GBD50018 Cylinder Hone, 5 Inch Bore, 180 Grit, Silicon Carbide
- The Brush Research GBD50018 Flex-Hone is a heavy-duty cylinder honing tool designed for use in 5" bore diameter applications. Featuring a 6" abrasive section with 180 grit silicon carbide, it delivers a plateau-style cross-hatch finish ideal for improving lubrication retention, reducing leakage, and refining sealing surfaces in engine blocks, hydraulic cylinders, and industrial bores.
- Features:
- Bead-style, flexible filament design with self-centering, self-aligning, and self-compensating action
- 180 grit silicon carbide abrasive balances peak removal with preservation of oil valleys (approximately 30–40 µin Ra)
- Non-directional plateau cross-hatch pattern enhances seal integrity and fluid retention
- Heavy-duty construction suitable for large-diameter bores in block and industrial applications
- Specifications:
- Bore Diameter: 5"
- Abrasive Material: Silicon Carbide
- Grit: 180 (Medium-Fine)
- Abrasive Length: 6"
- Overall Length: 17-1/2"
- Stem Diameter: 0.35"
- Recommended Speed: up to 600 RPM
- Typical Surface Finish: 30–40 µin Ra
- Applications: Engine block cylinders, hydraulic bores, industrial piping
- The FLEX-HONE GBD50018 can also be referred to as 5" bore hone, GBD50018 flex hone, silicon carbide cylinder hone, plateau finishing brush, and heavy-duty bore tool.
Brush Research’s GBD-Series Flex-Hones are heavy-duty tools trusted in automotive, hydraulic, and industrial sectors for delivering consistent plateau-style finishes in large-bore applications.
Q: What bore diameter is this hone designed for?
A: The GBD50018 is engineered specifically for use in 5" bore diameter cylinders.
Q: What finish quality does the 180 grit provide?
A: It creates a plateau finish of approximately 30–40 µin Ra, enhancing oil retention and seal effectiveness.
Q: Can I use this hone with a handheld drill?
A: Yes—use with drill presses or handheld drills at speeds up to 600 RPM, using oil-based honing lubricant.
Q: What materials is this hone suitable for?
A: Effective for cast iron, mild steel, stainless steel, and other ferrous materials common in block and hydraulic applications.
Q: What lubricant should I use?
A: Use oil-based honing lubricant to preserve the abrasive bond and ensure consistent finish quality.
