FLEX-HONE GB45824 Cylinder Hone, 4-5/8 Inch Bore, 240 Grit, Silicon Carbide
- The Brush Research GB45824 Flex-Hone is a standard-duty cylinder honing tool engineered for 4-5/8" bore diameter applications. Featuring 240 grit silicon carbide abrasive and a 4" abrasive section, it delivers a medium plateau-style cross-hatch finish ideal for enhancing lubrication retention, reducing leakage, and improving sealing performance in brake cylinders, engine cylinder liners, and hydraulic bores.
- Features:
- Bead-style, flexible filament design with self-centering and self-aligning action
- 240 grit silicon carbide abrasive balances peak removal with oil-retention valleys (approximately 24–32 µin Ra)
- Non-directional plateau cross-hatch pattern enhances seal integrity and fluid flow
- Standard-duty construction optimized for block cylinders and industrial bores
- Specifications:
- Bore Diameter: 4-5/8"
- Abrasive Material: Silicon Carbide
- Grit: 240 (Medium)
- Abrasive Length: 4"
- Overall Length: 13-1/2"
- Stem Diameter: 0.31"
- Recommended Speed: up to 600 RPM
- Typical Surface Finish: 24–32 µin Ra
- Applications: Brake cylinders, engine liners, hydraulic bores
- The FLEX-HONE GB45824 can also be referred to as 4-5/8" bore hone, GB45824 flex hone, silicon carbide cylinder hone, plateau finishing brush, and medium grit bore tool.
Brush Research Manufacturing’s GB-Series Flex-Hones are trusted for delivering consistent plateau finishes in industrial, automotive, and hydraulic applications involving medium-large bore diameters.
Q: What bore diameter is this hone designed for?
A: The GB45824 Flex-Hone is designed specifically for use in 4-5/8" bore diameter cylinders.
Q: What finish quality does the 240 grit provide?
A: It delivers a medium plateau finish in the range of 24–32 µin Ra, ideal for seal seating and oil control.
Q: Can I use this hone with a handheld drill?
A: Yes—when used with drills or drill presses, maintain speeds up to 600 RPM and use honing oil.
Q: What materials is this hone suitable for?
A: Effective on cast iron, mild steel, stainless steel, and other ferrous materials commonly found in brake, engine, and hydraulic cylinders.
Q: What lubricant should I use?
A: Use oil-based honing lubricants to protect the abrasive bond during use.
