Brush Research BC21418 Flex-Hone Cylinder Hone, 2-1/4" Bore, Silicon Carbide, 180 Grit, 8" Length

Brush Research BC21418 Flex-Hone Cylinder Hone, 2-1/4" Bore, Silicon Carbide, 180 Grit, 8" Length

• The Brush Research BC21418 Flex-Hone Cylinder Hone is a 2-1/4" bore honing tool featuring 180 grit silicon carbide abrasive. Designed to produce a controlled surface finish with a consistent crosshatch pattern, this Flex-Hone is ideal for engine cylinders, valve guides, and other precision bores needing efficient surface conditioning.
• Features:
  • 2.126 to 2.250 inch working range targets standard 2-1/4 inch bores for consistent plateau finishing and deglazing
  • Silicon carbide, 180 grit media provides a balanced cut and surface finish on cast iron, mild steel, and stainless
  • Flexible nylon filament construction conforms to bore geometry to reduce chatter and improve cross hatch
  • Standard duty BC series design with 8 inch overall length for use in hand drills or machine spindles
  • Application note: general use cylinder hone; not a replacement part for a specific tool or engine model
• Specifications:
  • Manufacturer: Brush Research
  • Part Number: BC21418
  • Category: Abrasives
  • Subcategory: Flexible cylinder hones
  • Product Type / Function: Flex-Hone for finishing and deglazing cylinder bores
  • Bore Size / Working Range: 2.126 to 2.250 inches
  • Abrasive / Grit: Silicon carbide, 180 grit
  • Overall Length: 8 inches
  • Maximum RPM: 900
  • Filament Construction: Abrasive globules bonded to flexible nylon filaments
  • End Marking Color: Cardinal red
  • Material Applications: Cast iron, mild steel, stainless steel
  • Packaging Type: Single tool
  • Quantity: 1 count
  • Alternate Part Numbers / Cross References: BSBC21418; BRSBC21418
  • System Compatibility or Application: Use with appropriate honing oil in a rotating tool; not a replacement part
• The Flex-Hone can also be referred to as flex hone 2-1/4 inch, ball hone 180 grit, silicon carbide cylinder hone, flexible nylon filament hone, and small engine cylinder hone.

Brush Research designs and produces surface finishing tools for industrial, automotive, and aerospace applications, including Flex-Hone tools, abrasive brushes, and deburring solutions engineered for reliable performance and repeatable results.

Q: What bore range does BC21418 cover?
A: It is intended for bores from 2.126 to 2.250 inches, centered on 2-1/4 inch nominal.

Q: What speed and lubricant should I use?
A: Do not exceed 900 rpm and use a good quality honing oil or cutting fluid for best finish and tool life.

Q: Which materials is this grit suitable for?
A: 180 grit silicon carbide is commonly used on cast iron, mild steel, and stainless steel for deglazing and plateau finishing.