Sumitomo 5U00239 Solid Carbide Jobber Drill 11.70mm

Product Description

The SUMITOMO 5U00239 is a solid carbide jobber-length drill bit designed for high-performance metal cutting in demanding production environments. It measures 11.70 mm in diameter with a 135-degree split point and carries a multi-layer TiAlCr/TiSi proprietary coating that extends tool life when drilling steel, stainless steel, and hardened materials. Overall length is 121.00 mm (4.7638 inches) with a flute length of 73.00 mm (2.8740 inches). The straight cylindrical shank measures 12 mm in diameter with a 48 mm shank length. This drill is part of the MDW-GS series and is installed by machinists and tool-and-die professionals in CNC and manual drilling operations.

The 5U00239 is suited for applications in aerospace, automotive, and general metalworking where consistent hole quality in ferrous and difficult-to-machine materials is required. The 4xD flute-to-diameter ratio and tapered web configuration support chip evacuation and reduce walking at entry. Compatible material codes are K and P, covering steel and stainless steel workpiece categories. This drill is sold individually and is intended for use in standard straight-shank toolholders and drill chucks accepting a 12 mm shank.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Multi-layer TiAlCr/TiSi coating for elevated heat resistance and extended tool life
• 135-degree point angle reduces thrust force and improves self-centering on entry
• Tapered web configuration aids chip evacuation and reduces cutting resistance
• MDW-GS series with 4xD flute ratio suited for through-hole drilling in steel and stainless steel
• h8 diameter tolerance on drill body for consistent hole sizing

Compatibility

Designed for use in straight-shank toolholders and drill chucks accepting a 12 mm shank diameter. Suitable for machining steel, stainless steel, and hardened materials as indicated by workpiece material codes P and K.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with CNC or manual drilling equipment. Secure the shank fully in the toolholder or chuck to the specified grip depth before operation. Verify spindle speed and feed rate against the machine tool manufacturer recommendations for solid carbide tooling in the target material. Do not use this drill without confirming the toolholder bore accepts the 12 mm straight shank diameter.