Accupro ACC-RAD13 Concave Radius Cutting Tool Bit

Product Description

The ACCUPRO ACC-RAD13 is a concave radius cutting tool bit designed for precision turning operations on metal lathes and CNC turning centers. Built in the RAD style, it forms smooth, consistent concave radii in a single pass. The carbide-tipped construction delivers long cutting life on ferrous and non-ferrous materials. At 4.5 inches in overall length with a 13/32-inch radius, a 3/4-inch square shank, and a 3/16-inch tip thickness, this bit fits standard lathe tool holders and provides the rigidity needed to hold tight tolerances during radius form turning. It is a right-hand orientation bit intended for standard right-hand tool post setups.

This tool bit is suited for production and job-shop environments where repeatable concave radius profiles are required. Typical applications include turning grooves, seat profiles, and decorative or functional radii on shafts, pins, and similar workpieces. The 3/4-inch square shank seats securely in matching tool holders on engine lathes and turret lathes. Machinists and tool-and-die professionals working in metalworking shops are the primary users of this tool bit style.

Key Features

• Concave RAD-style geometry produces consistent radius profiles in one pass
• 13/32-inch radius for precise, repeatable form turning
• Carbide tip provides extended wear resistance on a range of metals
• 3/4-inch square shank fits standard lathe tool holders
• Right-hand orientation for conventional right-hand tool post setups
• 3/16-inch tip thickness supports rigidity during aggressive cuts

Compatibility

Designed as an OEM-style replacement or direct-use tool bit for lathe and turning center tool holders accepting a 3/4-inch square shank in right-hand orientation.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the machine powered down and fully stopped. The shank must be clamped securely in the tool holder with appropriate set screws torqued to the machine manufacturer's specification before operation. Inspect the carbide tip for chips or cracks before each use and replace the bit if any damage is found. Follow all applicable shop safety procedures and machine guarding requirements during setup and operation.