FLEX-HONE GB41812 Cylinder Hone, 4-1/8" Bore, 120 Grit, Silicon Carbide, 4" Length

FLEX-HONE GB41812 Cylinder Hone, 4-1/8" Bore, 120 Grit, Silicon Carbide, 4" Length

• The FLEX-HONE GB41812 Cylinder Hone is a 4-1/8" bore flexible honing tool designed for cylinder finishing, deglazing, deburring, and surface conditioning. Manufactured by Brush Research Manufacturing, this 120 grit silicon carbide hone is self-centering and self-aligning for easy use in automotive, industrial, marine, aerospace, and hydraulic applications. It helps create a controlled cross-hatch surface finish for improved lubrication retention and seal performance.
• Features
  • 4-1/8" Bore Size – Designed for use on 4-1/8" / 105mm cylinders and similar bore applications.
  • 120 Grit Silicon Carbide Abrasive – Provides effective cutting action for cylinder deglazing, finishing, and surface preparation.
  • Flexible Hone Design – Self-centering and self-aligning for easier use without complex setup.
  • Plateau Surface Finishing – Helps reduce Ra, Rk, and Rpk values while maintaining valleys for oil retention.
  • Deburring Capability – Efficiently deburrs cross-drilled holes and creates smooth, radiused intersections.
  • Improved Lubrication Control – Produces a cross-hatch finish that supports oil retention and helps extend seal life.
  • Made in USA – Manufactured in the United States by Brush Research Manufacturing.
• Specifications
  • Manufacturer: Brush Research Manufacturing Co., Inc.
  • Brand: FLEX-HONE
  • Part Number: GB41812
  • Product Type: Flexible Cylinder Hone
  • Bore Size: 4-1/8" / 105mm
  • Hone Length: 4"
  • Overall Length: 13-1/2"
  • Abrasive Type: Silicon Carbide
  • Grit Size: 120 Grit
  • End Marking Color: Silver
  • Applicable Standard: ISO 9001
  • Country of Origin: USA
• Applications
  • Automotive engine blocks and cylinder liners
  • Cylinder deglazing
  • Cross-hatch surface finishing
  • Marine engine maintenance
  • Hydraulic and fluid power systems
  • Industrial manufacturing and repair
  • Military and aerospace components
  • Firearm barrel finishing
• The FLEX-HONE GB41812 Cylinder Hone is also commonly referred to as a 4-1/8" cylinder hone, 120 grit silicon carbide hone, Flex-Hone 4-1/8 bore hone, Brush Research GB41812, cross-hatch cylinder hone, flexible bore hone, and engine cylinder deglazing hone.

Q: What bore size is the FLEX-HONE GB41812 made for?
A: The GB41812 is designed for a 4-1/8" / 105mm bore size.

Q: What abrasive material does this hone use?
A: It uses 120 grit silicon carbide abrasive.

Q: What is the overall length?
A: The overall length is 13-1/2".

Q: What is this cylinder hone commonly used for?
A: It is commonly used for cylinder deglazing, surface finishing, deburring, and creating a controlled cross-hatch finish for oil retention.