The Flex-Hone® for Rotors

Rotors that lack a smooth, non-directional finish make more noise and wear out more quickly. With disc brake rotors, surface irregularities can cause harmonic vibrations that produce an annoying brake squeal or slapping sound. Flywheels in automotive transmissions can also produce excessive noise and wear if the flywheel’s surface is uneven. Similarly, vibration problems in reciprocating machinery can result in high noise, machine downtime, and fatigue failure. Unless a disc brake rotor or flywheel has the proper surface finish, excessive noise and wear – or worse – can occur.

Flexible Honing for Surface Irregularities

To eliminate surface irregularities, automotive manufacturers and car mechanics alike use the Flex-Hone® for Rotors from Brush Research Manufacturing (BRM). This Made-in-the-U.S.A. flexible honing tool produces a non-directional surface finish on brake rotors and automotive flywheels, eliminating excessive brake noise and unwanted driveline vibrations. As the image that accompanies this blog entry shows, a medium-grit Flex-Hone® for Rotors produces a surface finish that’s free of cut, torn, or folded metal. BRM’s rotor honing tool is also available in fine and coarse grits.

How to Use the Flex-Hone® for Rotors

The Flex-Hone® for Rotors is designed to be held securely in a collet, chuck, or similar holding device. Remember to position all guards before starting the tool and to follow all safety requirements. With brake lathes, mount the disc rotor securely and rotate between 125 and 210 revolutions per minute (RPM). With a variable-speed electric drill motor or low-speed air drill, rotate the Flex-Hone® at 300 to  600 RPM and never exceed 1000 RPM. Use light, uniform pressure rather than excessive dwell time. To produce the desired surface finish, use the tool for approximately 10 - 15 seconds clockwise and 5 – 10 seconds counterclockwise. Do not overhead by dwelling for longer periods of time.

Reduce Tool Costs and Increase Rotors per Hone

Named an Undercar Digest Magazine “Top Ten Tool” eight years in a row, the Flex-Hone® for Rotors is ideal for both new and re-turned rotors. As Barry McMorrow, an ASE Certified Technician for Goodyear Tire Co. explains, “I’ve found the finish on the rotors to be excellent.” BRM’s proprietary technology also “stands up to the most extreme conditions”. Rob Jones, an Assistant Manager for Midas Muffler, agrees. After testing the Flex-Hone® for Rotors on various makes and models of cars for eight months, Jones reported that the tool “lasted for over 200 sets of rotors,” making it “cheaper to use over a long period of time than other brands that are on the market.”