Sumitomo U103695 Solid Carbide Jobber Drill Bit 0.221in

Product Description

The SUMITOMO U103695 is a jobber-length, solid carbide drill bit designed for high-productivity metal cutting in demanding shop and production environments. It carries a dual TiAlCr and TiSi coating system that extends tool life and supports higher cutting speeds across ferrous workpiece materials. The bit measures 0.2210 inches in diameter with a 135-degree split-point geometry that reduces thrust and improves self-centering at entry. Overall length is 3.937 inches. A coolant-through design channels cutting fluid directly to the tip, making it well suited for deep-hole applications and interrupted cuts. Licensed machinists, tool-and-die makers, and CNC operators typically deploy this bit in production settings.

The U103695 is built for cutting cast iron, stainless steel, and alloy steel. Its 5xD flute-to-diameter ratio accommodates moderate-depth holes without excessive chip packing. The straight-cylindrical shank at 0.2344 inches diameter seats directly in standard ER or drill-chuck tooling. This bit fits within the MDW-HGS series lineup, which targets high-speed, high-accuracy hole-making in metal fabrication and machining operations where surface finish and hole tolerance are critical.

Key Features

• Solid carbide construction for rigidity and thermal resistance in ferrous materials
• TiAlCr and TiSi dual coating for extended tool life at elevated cutting temperatures
• 135-degree drill point angle reduces entry thrust and improves centering
• Coolant-through capability delivers fluid directly to the cutting zone
• Tapered web configuration supports chip evacuation and reduces walk at breakthrough
• h8 diameter tolerance on the cutting edge for consistent hole sizing

Compatibility

Designed for use in metal cutting applications on cast iron, stainless steel, and steel workpieces; part of the SUMITOMO MDW-HGS series for high-speed drilling operations.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Secure the straight-cylindrical shank fully in a compatible drill chuck or collet holder before operation, and verify runout with a dial indicator on precision work. Always engage coolant flow before the tool contacts the workpiece when using the through-coolant feature. Inspect the cutting edges for chipping or wear before each use, as carbide tools can fail rapidly once edge integrity is compromised.