Sumitomo 5VHY101 Screw Machine Drill Bit 12.50mm Carbide

Product Description

The SUMITOMO 5VHY101 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. It features a 12.50 mm diameter, a 135-degree web-thinned point, and a multi-layer DEX proprietary coating that extends tool life in abrasive materials. The overall length is 128.00 mm (5.0394 inches), with a straight cylindrical shank measuring 13.00 mm (0.5118 inches) in diameter. Coolant-through capability supports chip evacuation and thermal management during deep-hole drilling operations. This bit is sized for use in CNC machining centers, drill presses, and production drilling setups operated by machinists and tool-and-die professionals.

The 5VHY101 is built for production drilling in steel, stainless steel, cast iron, and high-temperature alloys. Its screw machine length profile provides rigidity and reduced deflection in short-reach applications. The 3xD flute-to-diameter ratio and tapered web configuration help maintain chip flow at moderate drilling depths up to 46.40 mm (1.8268 inches). The MDW-HGS series is intended for shops and field machinists running high-feed programs or tackling difficult-to-machine alloys where standard HSS tooling falls short.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and high-temp alloy materials
• Multi-layer DEX proprietary coating extends tool life and reduces heat buildup
• 135-degree web-thinned point reduces entry thrust and improves hole location accuracy
• Coolant-through design supports chip evacuation during deep or high-feed drilling
• Screw machine length provides maximum rigidity and minimal deflection in short-reach setups
• 2-flute regular spiral geometry with tapered web for consistent chip control

Compatibility

Designed for use in CNC machining centers and drill presses accepting a 13.00 mm straight cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, and high-temperature alloys. Part of the Sumitomo MDW-HGS series for production metalworking applications.

Installation Notes

Installation and use should be performed by qualified machinists familiar with carbide tooling handling and CNC or manual drilling equipment. Ensure the spindle and toolholder are fully powered down before changing or seating the bit. Carbide tooling is brittle and should not be subjected to impact or dropped onto hard surfaces. Confirm coolant-through supply lines are properly connected and flowing before initiating drilling cycles to prevent premature tool failure.