D4140 Replaceable Tip Drill

June 01, 2018
D4140 Replaceable Tip Drill

Walter has introduced the D4140 replaceable tip drill, a tough and versatile new drill that delivers enhanced process reliability and extended tool life. The D4140 advantage stems from its design and construction, featuring a hardened and polished surface that offers exceptional resistance to friction wear. The drill’s ground and polished flutes, similar to those of solid-carbide drills, ensure smooth and secure chip evacuation.

The drill’s design features precision coolant delivery directly to the cutting edge, avoiding thermal shocks to the edge and resulting in longer tool life and maximum process reliability. Additionally, the drill’s 100° prismatic insert seating for the P600x Xtra·tec Point inserts provide secure clamping ensuring precise, high-quality holes. Drills are available in 3 x D, 5 x D and 7 x D and in 0.47 in. to 1.26 in. (12-31.99 mm) dia.

The drills have universal applications in a variety of materials and users can also benefit from simple tool selection through Walter Color Select.

Related Glossary Terms

  • coolant


    Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.

  • flutes


    Grooves and spaces in the body of a tool that permit chip removal from, and cutting-fluid application to, the point of cut.