Accupro ACC-RAL12 Concave Radius Cutting Tool Bit

Product Description

The ACCUPRO ACC-RAL12 is a left-hand, concave radius cutting tool bit designed for precision radius turning and profiling operations on a lathe. Built to the RAL style specification, it features a carbide tip brazed onto a square shank body. The overall length is 3.5 inches, the shank measures 0.5 inches square, the tip thickness is 0.125 inches, and the tip length is 0.5 inches. The 3/8-inch concave radius geometry makes this bit well suited for forming internal curved profiles and undercut radii in a single pass. Machinists and tool-and-die professionals use this style of bit when consistent radius geometry is required across repeated cuts.

This tool bit fits standard lathe toolholders accepting a 0.5-inch square shank. It is appropriate for use in manual engine lathes and CNC turning centers where left-hand tool orientation is required. The RAL style profile is commonly used in production machining environments for radius grooving, profile turning, and finishing passes where a smooth concave form must be held to close tolerance. The carbide tip maintains cutting edge integrity across a broad range of ferrous and non-ferrous workpiece materials.

Key Features

• Left-hand cut orientation for right-to-left feed direction on the lathe
• 3/8-inch concave radius for accurate internal curved profile generation
• Carbide tip construction for extended tool life and heat resistance
• 0.5-inch square shank seats securely in standard toolpost holders
• RAL style geometry matches standard replacement specifications for easy sourcing
• 0.5-inch tip length with 0.125-inch tip thickness for controlled depth engagement

Compatibility

Designed as an OEM-style replacement and standard fit for lathes and turning centers accommodating a 0.5-inch square shank tool bit in left-hand RAL style configuration.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the lathe spindle before seating or adjusting the tool bit in the toolpost or holder. Ensure the shank is fully supported and clamped square to prevent chatter or tip fracture during the cut. Follow applicable shop safety procedures and machine manufacturer guidelines when setting tool height and engagement depth.