FLEX HONE GB31232 Cylinder Hone, 3.5" Bore, 320 Grit, Silicon Carbide

FLEX HONE GB31232 Cylinder Hone, 3.5" Bore, 320 Grit, Silicon Carbide

• The FLEX HONE GB31232 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 320 grit silicon carbide abrasive globules on flexible nylon filaments and measures 3.5" in diameter by 13.5" in overall length.
• Features:
  • 320 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.
  • Typically achieves a surface finish of 18-30 microinch (0.5-0.7 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: GB31232
  • Order Part Number: BSGB31232
  • 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: 320
  • Abrasive Type: Silicon Carbide
  • Tip Marking: White
  • 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): 18-30 Microinch (0.5-0.7 Micrometer)
  • Lubrication: Required
  • Applicable Standard: ISO 9001
  • Country of Origin: USA
  • UPC: 843469143013
• This item is also often referred to as a flex hone, cylinder hone, engine hone, block hone, 3.5" hone, 320 grit hone, and flexible 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 GB31232 designed for?
A: This hone is designed for bore sizes between 3.251" and 3.5" (89mm).

Q: What finish does the 320 grit provide?
A: 320 grit typically produces an 18-30 microinch (0.5-0.7 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: What materials is this hone suited for?
A: This hone is suited for mild steel, stainless steel, cast iron, and other softer ferrous materials.