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The ACCUPRO ACC-RAL5 is a left-hand concave radius cutting tool bit designed for precision radius turning and profiling operations on a lathe. Built in the RAL style, this carbide-tipped bit measures 2.5 inches in overall length with a 3/8-inch square shank for secure tool post mounting. The 5/32-inch concave radius and 3/32-inch tip thickness allow machinists and tool-and-die professionals to cut consistent, repeatable concave profiles in steel, cast iron, and other metals. The carbide tip delivers wear resistance suitable for production and job-shop turning applications.
This tool bit is intended for use in manual and CNC lathes where concave radius forms are required. The left-hand orientation suits applications where the tool feeds from left to right across the workpiece. Typical use cases include producing concave grooves, radius reliefs, and form profiles on turned components in manufacturing and repair environments. The 3/8-inch square shank fits standard lathe tool holders commonly used in job shops and production machining cells.
Designed as an OEM-style replacement and standard fit for lathes equipped with 3/8-inch square tool post holders accepting RAL-style radius cutting bits.
Installation should be performed by a qualified machinist familiar with lathe tooling setup. Power down and lock out the lathe before seating or removing the tool bit from the holder. Ensure the shank is fully seated and clamping screws are tightened evenly to prevent chatter. Do not exceed the recommended depth of cut for carbide-tipped form bits, as side loading can chip the tip.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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