As a universal step-drill, Tritan-Drill is suitable for a range of materials, featuring geometry designed to deliver optimum chip removal and low cutting pressure, says Mapal.
To give a specific example, Mapal states that 45% more bores were possible in comparison to a twin-flute drill when machining a cylinder head made of GJL 250.
Previously, a twin-flute step-drill was used for machining the 15 and 16 mm diameters with a total of 1,800 bores machined at a cutting speed of 100 m/min and a feed rate of 0.2 mm/rev. With Tritan, the cutting speed and feed rate could be increased to 130 m/min and 0.34 mm/rev, while some 2,600 bores were produced.
The drill is available in 5 to 20 mm diameters.
