Sgs 63203 Screw Machine Drill Bit 15.50mm Carbide Altin

Product Description

The SGS 63203 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. Built to Series 135M specifications, it features a 145-degree notched point angle and an AlTiN (Ti-NAMITE-A) coating that provides heat resistance and extended tool life in abrasive cutting conditions. The 15.50 mm (0.6102 inch) diameter, right-hand cut geometry and web-thinned tapered web reduce thrust and improve chip evacuation. This bit is installed by machinists and tooling technicians working on CNC machining centers, drill presses, and manual mills where precision hole tolerances and tool longevity are priorities.

The SGS 63203 is suited for drilling alloy steels and titanium, materials that demand a rigid, heat-resistant tool. The screw machine length format provides a shorter, stiffer profile compared to jobber-length bits, reducing deflection in close-tolerance applications. With a 3xD flute-to-diameter ratio and a maximum drilling depth of 45.00 mm, it fits production and job-shop environments where repeatable hole quality in tough workpiece materials is required. The straight shank and 16.00 mm shank diameter allow direct mounting in standard chucks and collet holders.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN (Ti-NAMITE-A) coating for elevated heat resistance and reduced tool wear in titanium and alloy steel
• 145-degree notched point angle reduces cutting force and improves self-centering
• Web-thinned tapered web lowers thrust requirements and aids chip removal
• Screw machine length (short series) profile minimizes deflection in tight-tolerance drilling
• Right-hand cut with regular spiral flute geometry for consistent chip flow

Compatibility

Designed as an OEM-style replacement or direct-use tooling for machining centers, CNC drill presses, and manual drill presses accepting straight-shank drill bits with a 16.00 mm shank diameter. Primary workpiece materials listed by the manufacturer are alloy steel and titanium.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists or tooling technicians familiar with speeds, feeds, and workholding requirements for carbide tooling. Ensure the machine spindle and chuck or collet are clean and within tolerance before seating the straight shank. Carbide is brittle — avoid side-loading or using in worn spindles with runout, as this can cause chipping or fracture. Follow the machine manufacturer and tooling guidelines for appropriate speeds and feeds for the workpiece material.