FLEX-HONE BC20032 Cylinder Hone, 2" Bore Diameter, 320 Grit, Silicon Carbide
- The Brush Research BC20032 Flex-Hone is a professional-grade cylinder honing tool designed for 2" bore size applications. Featuring 320 grit silicon carbide abrasive, it delivers a non-directional, plateau-style cross-hatch finish that improves lubrication retention and seal performance in mild steel, stainless steel, cast iron, and other ferrous or non-ferrous components.
- Features:
- Self-centering and self-aligning brush design ensures uniform surface contact
- 320 grit silicon carbide abrasive produces a fine plateau finish (~18–30 µin Ra)
- Ideal for final finishing in valve guides, brake cylinders, and small hydraulic or pneumatic bores
- Reusable and durable construction for extended tool life across multiple jobs
- Manufactured in the USA by Brush Research for consistent quality
- Specifications:
- Bore Size: 2"
- Abrasive: Silicon Carbide
- Grit: 320 (Extra-Fine)
- Abrasive Length: 3"; Overall Length: 8"
- Stem Diameter: 0.245"
- Recommended Operating Speed: 800–1,200 RPM
- Typical Surface Finish: 18–30 µin Ra
- Application: Brake cylinders, valve guides, hydraulic and pneumatic bores
- Country of Origin: USA
- The FLEX-HONE BC20032 can also be referred to as 2" bore hone, BC20032 flex hone, silicon carbide honing tool, fine grit cylinder hone, and plateau finish brush.
Brush Research Manufacturing has over 60 years of experience producing innovative surface finishing tools. Their Flex-Hone® series is trusted by technicians across the automotive, industrial, and hydraulic sectors for delivering consistent, high-quality plateau finishes with minimal operator effort.
Q: What bore size is this hone intended for?
A: The BC20032 Flex-Hone is specifically designed for use in 2" bore cylinders.
Q: Can I use this hone in a handheld drill?
A: Yes. It works with handheld drills or drill presses at speeds between 800 and 1,200 RPM when used with proper lubrication.
Q: What finish does the 320 grit provide?
A: It delivers a fine plateau finish in the range of 18–30 µin Ra—ideal for sealing surfaces and enhancing oil retention.
Q: What materials is this hone compatible with?
A: It’s suitable for mild steel, stainless steel, cast iron, and non-ferrous metals like brass or aluminum when finishing small bores.
Q: What type of lubricant should I use?
A: Use oil-based honing lubricant only. Solvents should be avoided as they may damage the abrasive bonding.
