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Brush Research Manufacturing (BRM) provides Flex-Hone® tools and industrial brushes to auto parts manufacturers, engine rebuilders, diesel mechanics, car and kart racers, hobbyists, and automotive restoration specialists. Available in numerous sizes, grits, and abrasive types, the Flex-Hone® tool is ideal for engine block honing, surface finishing, deburring, and cylinder deglazing. BRM also supplies a full line of automotive brushes, including high-quality NamPower™ abrasive brushes.

From brake drum makers to truck engine remanufacturers, automotive parts suppliers use machine-mounted Flex-Hone® tools for consistent, high-quality surface conditioning and deburring results. For any type and size of automotive cylinder, the Flex-Hone® produces a unique crosshatch pattern for optimum lubrication. When used for cylinder deglazing, the Flex-Hone® provides for the proper seating and sealing of new piston rings in car engines. Often, hobbyists use the Flex-Hone® with an electric drill.

Flex-Hone® Applications
Camshafts and Valves
  • Cam bearing bores
  • Valve guides
  • Valve bodies
Clutches and Brakes
  • Brake cylinders
  • Brake rotors for cars, trucks, and motorcycles
  • Clutch and brake master cylinders
Crankshafts, Conrods, and Piston Pins
  • Crank bores
  • Connecting rods
  • Piston pin bores
Engine Cylinders and Liners
  • Engine cylinders
  • Cylinder liners (Wet liners)
  • Engine liners (Dry liners)
  • Improving engine compression ratio
Oil Retention and Adhesion
  • Applying a plateau surface finish for oil retention
  • Applying specific surface finishes
  • Surface preparation (roughing) for improved adhesion
Surface Finishing and Deburring
  • Removing burrs from keyways, slots, and grooves
  • Crosshole deburring
Industrial Brush Applications
Automotive Brushes
  • Deburring and finishing cast aluminum engine heads
  • Surface conditioning manifolds
  • Polishing and finishing small inside diameter (ID) holes on machined parts
NamPower™ Brush Tools
  • Thread cleaning
  • Surface stabilization
  • Consistent surface finishing
  • Rust and corrosion removal
  • Gasket cleaning and removal
  • Full automation machining center capability
  • Pre-coating surface preparation
  • Decorative finishes
  • Tool mark blending and component parts deburring after machining or grinding
Crimped Wire Wheels
  • Automotive paint removal
  • Tube end deburring
  • Thread cleaning
  • Mill scale removal
  • Removing excess molded rubber (flashing)
  • Decorative finishes
Knotted Wire Wheels and Knotted Wire Cups
  • Bedliner surface preparation
  • Weld finishing
  • Slag removal
  • Decorative finishes
Related Resources
Application Guide: Automotive Engine Rebuilder Improves Quality With Flex-Hone®
Application Guide: Use of BRM Flex-Hone® tools in Preparation of 4 Cycle Kart Engines