FLEX HONE GB31412 Cylinder Hone, 3.25" Bore, 120 Grit, Silicon Carbide

FLEX HONE GB31412 Cylinder Hone, 3.25" Bore, 120 Grit, Silicon Carbide

• The FLEX HONE GB31412 is a standard duty cylinder hone designed for bore sizes between 3.001" and 3.25", used for surface finishing, deburring, and plateau finishing. It uses 120 grit silicon carbide abrasive globules on flexible nylon filaments and measures 3.25" in diameter by 13.5" in overall length.
• Features:
  • 120 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 used for deburring cross-drilled holes, leaving a clean, radiused intersection.
  • Plateau finishing removes machining peaks while preserving oil-retaining valleys, helping rings and seals seat without edge damage.
  • Typically achieves a surface finish of 35-50 microinch (0.9-1.4 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: GB31412
  • Order Part Number: BSGB31412
  • Product Line: FLEX HONE GB Standard Duty (3-1/4"-4-5/8")
  • Type: Standard Duty
  • Product Type: Cylinder Hone
  • Bore Diameter: 3.25" (83mm)
  • Minimum Bore Diameter: 3.001"
  • Maximum Bore Diameter: 3.25"
  • Overall Length: 13.5"
  • Abrasive Section Length: 3.5"
  • Stem Diameter: 0.31"
  • Grit Size: 120
  • Abrasive Type: Silicon Carbide
  • Tip Marking: Silver/No Color
  • 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): 35-50 Microinch (0.9-1.4 Micrometer)
  • Lubrication: Required
  • Applicable Standard: ISO 9001
  • Country of Origin: USA
  • UPC: 843469143266
• This item is also often referred to as a flex hone, cylinder hone, 3.25" bore hone, 120 grit hone, plateau finishing brush, and cross-hole deburring tool.

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 GB31412 designed for?
A: This hone is designed for bore sizes between 3.001" and 3.25" (83mm).

Q: What finish does the 120 grit provide?
A: 120 grit typically produces a 35-50 microinch (0.9-1.4 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 is this hone commonly used for?
A: It is commonly used for surface finishing, plateau finishing, and cross-hole deburring.