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The INTERNAL TOOL 20-1505 is a solid carbide interior grooving tool designed to cut retaining ring grooves in bored holes. It uses a right-hand cutting direction and accepts a minimum hole diameter of 0.375 inches, making it suitable for small-bore groove work where precision and tool rigidity are critical. The shank diameter is 0.375 inches (3/8 inch) with a shank length of 1.75 inches and an overall length of 2.5 inches. The micrograin carbide construction provides wear resistance and dimensional stability during interrupted or continuous groove cuts. This tool is used by machinists and tool and die professionals in production and job-shop environments.
This grooving tool is suited for interior retaining ring groove applications in ferrous and non-ferrous materials where a right-hand cutting operation is required. The 0.057-inch groove width and 0.75-inch maximum hole depth and projection make it appropriate for shallow bores in small components such as hydraulic cylinders, pins, shafts, and precision assemblies. It does not include an undercut geometry and does not require a tool bit adjusting screw, simplifying setup on CNC lathes and manual turning centers.
Designed as an OEM-style interior grooving tool for retaining ring groove applications in bores with a minimum diameter of 0.375 inches and a maximum depth of 0.75 inches on CNC or manual turning equipment.
This tool is installed by machinists in a boring bar holder or toolpost rated for the 0.375-inch shank diameter. Secure the shank with appropriate set screws and verify runout before cutting. Ensure the workpiece is properly chucked and the machine is at a safe speed for the bore diameter and material being cut before engaging the tool. Follow shop safety protocols and machine manufacturer guidelines for carbide tooling feeds and speeds.
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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