Tru-maxx 66253291608 Mounted Point 60 Grit Ball B121

Product Description

The TRU-MAXX 66253291608 is an aluminum oxide mounted point designed for precision grinding, deburring, and surface blending on metal workpieces. It features a B121 ball profile, 60-grit medium grade abrasive, and a 0.125-inch shank diameter that fits standard die grinders and rotary tools. The aluminum oxide construction provides consistent cut rates on ferrous metals and hard alloys. Rated to 62,040 RPM, this mounted point suits high-speed grinding applications where a controlled, rounded contact surface is needed. Machinists, tool-and-die technicians, and fabrication professionals typically reach for this style of mounted point when working in bores, cavities, or contoured surfaces.

The B121 ball-shaped mounted point is suited for internal grinding, radius blending, and spot deburring in confined areas. The 0.5-inch head thickness provides enough material for extended service life during light-to-moderate stock removal. The 1.5-inch shank length allows reach into recessed cavities without adapter extensions in most standard die grinder setups. Typical applications include tool-and-die work, weld cleanup, mold finishing, and general-purpose bench grinding tasks in fabrication and machine shops.

Key Features

• B121 ball point shape for internal grinding and contoured surface work
• 60-grit medium grade aluminum oxide abrasive for consistent stock removal on ferrous metals
• 0.125-inch shank diameter fits standard die grinder collets
• 1.5-inch shank length provides reach into recessed bores and cavities
• 62,040 RPM maximum rating for use with high-speed rotary tools
• Blue color coding for quick grit and grade identification at the workbench

Compatibility

Designed for use with die grinders and rotary tools accepting a 0.125-inch (1/8-inch) collet. Compatible with standard 1/8-inch shank tooling setups common across bench-mounted and handheld pneumatic or electric die grinders.

Installation Notes

Mounted points should be installed and removed only while the tool is de-energized and the air supply is disconnected or the power switch is locked out. Inspect the mounted point for cracks or chips before each use and never operate above the stated maximum RPM of 62,040. Use the correct collet size to ensure the shank is fully seated and properly clamped before running. Personal protective equipment including eye protection and gloves is required during grinding operations per applicable ANSI and OSHA guidelines.