Cleveland C52775 Combo Drill Countersink Size 4 Carbide

Product Description

The CLEVELAND C52775 is a solid carbide combination drill and countersink designed for simultaneous center drilling and countersinking operations in a single pass. Part of the Series 1798 line, this Size 4 tool features a 60-degree included angle, a 0.125-inch drill point diameter, and a right-hand cutting direction. The bright, uncoated finish preserves the carbide substrate for maximum hardness and wear resistance. Machinists and tool-and-die professionals use this style of tool to prepare workpieces for lathe centers, fastener seating, and chamfered hole edges where precision entry geometry is required.

The C52775 is suited for production and job-shop environments working with alloy steel, carbon steel, cast iron, and aluminum. Its double-end geometry extends tool life by providing two usable cutting ends before replacement is needed. With an overall length of 2.125 inches and a body diameter of 0.313 inches, it fits standard drill chucks and collet holders used on CNC machining centers, manual lathes, and drill presses. This tool is appropriate wherever a single setup must handle both center drilling and countersinking without a tool change.

Key Features

• Solid carbide construction provides superior hardness and heat resistance compared to high-speed steel alternatives
• 60-degree included angle meets standard countersink geometry for common fastener and center-drill applications
• Double-end design extends usable tool life before replacement
• Bright, uncoated finish compatible with a wide range of cutting fluids and materials
• Right-hand cut for use with standard spindle rotation
• Works on primary workpiece materials including alloy steel, aluminum, carbon steel, and cast iron

Compatibility

Designed for use on alloy steel, aluminum, carbon steel, and cast iron workpieces. Compatible with standard drill chucks and collet systems that accept a 0.313-inch body diameter shank. Suitable for CNC and manual machine tool applications requiring Size 4 combo drill countersink geometry.

Installation Notes

Secure the tool in a properly sized collet or drill chuck and verify runout before starting the cut; excessive runout accelerates carbide wear and can cause chipping. Power down and lock out the machine spindle before changing or inspecting the tool. Use appropriate cutting fluid for the workpiece material to manage heat buildup, especially in steel and cast iron. Carbide tooling is brittle and should not be subjected to interrupted cuts or side-loading beyond the tool design parameters.