Sumitomo U103687 Taper Length Drill Bit 3/16 in Carbide

Product Description

The SUMITOMO U103687 is a taper length drill bit engineered for precision drilling in demanding metalworking and machining applications. Built from solid carbide, this bit delivers superior hardness and wear resistance compared to HSS alternatives. It features a 135-degree split point for self-centering entry and reduced thrust force. The J-Flute geometry promotes efficient chip evacuation, and the coolant-through design supports high-speed, deep-hole drilling by delivering cutting fluid directly to the tip. At 3/16 inch (0.1875 inch) diameter with a 2.1654-inch flute length and 4.1339-inch overall length, this bit fits the MDW-HGS series standard.

This drill bit is suited for use in CNC machining centers, drill presses, and automated production environments where consistent hole quality and tool life are priorities. The straight shank allows straightforward chuck mounting without adapters. The 8xD flute-to-diameter ratio makes it appropriate for moderately deep hole applications in steel, stainless, cast iron, and other ferrous and non-ferrous materials where a taper length reach is required over a jobber-length bit.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 135-degree point angle with self-centering geometry reduces walking and thrust force
• J-Flute design promotes positive chip evacuation in deep-hole drilling
• Coolant-through capability delivers cutting fluid directly to the cutting edge
• Straight shank with 0.1875-inch shank diameter fits standard collets and drill chucks
• Tight diameter tolerance of +0.00000 to -0.00071 inch ensures consistent fit and finish

Compatibility

Designed as an OEM-style replacement and standard production drill bit within the SUMITOMO MDW-HGS series for taper length solid carbide drilling applications.

Installation Notes

Installation and use should be performed by qualified machinists or CNC tooling technicians. Verify spindle speed and feed rate against the material being drilled before operation. Ensure the shank is fully seated and secured in the collet or chuck before running the spindle. When using the coolant-through feature, confirm that coolant pressure and flow are within the machine tool specifications to avoid tool breakage or ineffective chip clearing.