FLEX HONE GB31224 Cylinder Hone, 3.5" Bore, 240 Grit, Silicon Carbide

FLEX HONE GB31224 Cylinder Hone, 3.5" Bore, 240 Grit, Silicon Carbide

• The FLEX HONE GB31224 is a standard duty cylinder hone designed for bore sizes between 3.251" and 3.5", used for plateau finishing, deburring, and edge blending in engine, hydraulic, and pneumatic cylinder applications. It uses 240 grit silicon carbide abrasive globules on flexible nylon filaments and measures 3.5" in diameter by 13.5" in overall length.
• Features:
  • 240 grit silicon carbide abrasive globules for controlled material removal.
  • Self-centering, self-aligning, self-compensating-for-wear design produces a non-directional, cross-hatched finish.
  • Flexible nylon filaments allow the abrasive globules to float, helping maintain bore alignment.
  • 3.5" abrasive section with a 0.31" stem, for use in rotating spindles such as drills and drill presses.
  • Also useful for deburring cross-drilled holes and slots, port radiusing, and edge blending.
  • Typically achieves a surface finish of 24-32 microinch (0.6-0.8 micrometer) Ra.
  • Recommended operating speed of 600-900 RPM, with a feed rate of 10-2,500 IPM.
  • Manufactured in the USA by Brush Research Manufacturing.
• Compatible Applications:
  • Mild Steel
  • Stainless Steel
  • Cast Iron
  • Other Softer Ferrous Materials
• Specifications:
  • Manufacturer: Brush Research Manufacturing Co., Inc.
  • Part Number: GB31224
  • Order Part Number: BSGB31224
  • Product Line: FLEX HONE GB Standard Duty (3-1/4"-4-5/8")
  • Product Type: Cylinder Hone
  • Bore Diameter: 3.5" (89mm)
  • Minimum Bore Diameter: 3.251"
  • Maximum Bore Diameter: 3.5"
  • Overall Length: 13.5"
  • Abrasive Section Length: 3.5"
  • Stem Diameter: 0.31"
  • Grit Size: 240
  • Abrasive Type: Silicon Carbide
  • Tip Marking: Navy Blue
  • Stem Marking: Silver/No Color
  • Recommended RPM: 600-900 RPM
  • Feed Rate: 10-2,500 IPM
  • Power Requirements: 1/4 HP to 1/3 HP
  • Surface Finish (Ra): 24-32 Microinch (0.6-0.8 Micrometer)
  • Lubrication: Required
  • Applicable Standard: ISO 9001
  • Country of Origin: USA
  • UPC: 843469142962
• This item is also often referred to as a cylinder hone, flexible hone, brush hone, honing tool, engine deglazing tool, abrasive hone, and bore hone.

Brush Research Manufacturing, originator of the FLEX HONE, manufactures cylinder hones, deburring tools, and surface finishing brushes for automotive, hydraulic, aerospace, marine, and general industrial applications.

Q: What bore size range is the GB31224 designed for?
A: This hone is designed for bore sizes between 3.251" and 3.5" (89mm).

Q: What finish does the 240 grit provide?
A: 240 grit typically produces a 24-32 microinch (0.6-0.8 micrometer) Ra finish.

Q: What is the recommended operating speed for this hone?
A: The manufacturer recommends 600-900 RPM with a feed rate of 10-2,500 IPM.

Q: Can this tool be used for anything besides honing a cylinder bore?
A: Yes, it is also used for deburring cross-drilled holes and slots, port radiusing, and edge blending.