Sumitomo 5V00139 Jobber Drill Bit 2.7mm Solid Carbide

Product Description

The SUMITOMO 5V00139 is a solid carbide jobber length drill bit engineered for precision metal cutting in demanding production environments. Ground to a 135-degree drill point angle, it resists walking on entry and reduces the need for a center punch on flat stock. The bit carries a dual TiAlCr and TiSi coating that improves heat resistance and extends tool life when cutting abrasive or tough metallic workpieces. With an overall length of 78 mm (3.07 inches) and a flute length of 28 mm (1.10 inches), this is a standard jobber-reach tool suited for through-holes and blind-hole drilling in a range of ferrous materials. Installation and use are performed by machinists and tooling technicians.

This drill bit is intended for metal cutting applications in cast iron, stainless steel, and steel workpieces, covering primary material codes K, M, P, and S. The 5xD flute-to-diameter ratio makes it well suited for general production drilling on CNC machining centers, drill presses, and similar machine tool setups where coolant-through capability is required. The straight-cylindrical shank seats directly into standard drill chucks and collet holders without adapters, making it straightforward to deploy across multiple machine setups.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard and abrasive materials
• Dual TiAlCr and TiSi coating improves thermal stability and extends cutting edge life
• 135-degree split point reduces entry thrust and minimizes bit walking on flat surfaces
• Coolant-through design delivers cutting fluid directly to the cutting zone for chip evacuation and heat control
• Tapered web configuration maintains core strength while supporting efficient chip flow
• h8 diameter tolerance on the 2.70 mm cutting diameter supports close-tolerance hole requirements

Compatibility

Part of the MDW-HGS series. Suited for cast iron, stainless steel, and steel workpieces (material codes K, M, P, S). Compatible with standard straight-cylindrical drill chucks and collet holders accepting a 3.00 mm shank diameter.

Installation Notes

Installation and setup should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the straight-cylindrical shank fully into the chuck or collet and verify runout before engaging the cut. Confirm coolant-through supply lines are clear and delivering adequate flow before beginning drilling operations to protect the cutting edge and aid chip evacuation.