Walter, the Wisconsin-based developer of cutting tools and inserts, introduced two new solid-carbide chamfering drills for its Walter Titex line: the X·treme Step 90 and the X·treme Pilot Step 90 for XD (extra deep) drilling applications. Each is said to be the product of engineering efforts to increase the drills’ productivity, and to deliver more reliability to the drilling process, with improved quality for the finished workpieces.

Walter develops cutting tools for milling, drilling, turning, and boring, and specialized tooling through its several brands, Walter Prototyp, Walter Valenite, and Walter Titex.

The new Walter Titex X·treme Step 90 is available in two versions, Type 99 and Type 79, respectively with and without internal cooling functionality.

Both models have a 4-margin design to improve hole quality, and this design is well suited to entering in uneven surfaces up to 5 degrees, uneven exits up to 45 degrees, and cross holes.

In addition, X·treme Step 90’s countersink of 90 degrees limits the need for deburring, and promotes better chamfering results. Also, correcting the countersink promotes high process reliability.

The X·treme Step 90 drill has a point geometry (140 degree point angle) that makes it suitable for universal use. Diameter tolerance is m7, and shank diameter tolerance is h6 per DIN 6535 HE and HA.

The drill’s XPL coating makes it available for universal use, and promotes better chip evacuation, wear resistance, and tool life.

The Walter Titex X·treme Pilot Step 90 solid-carbide chamfering drill is especially recommended for extra deep drilling. It has a 2-flute design, short length for maximum stability, 2xDc pilot length to provide the best alignment for the XD drill, diameter tolerance of p7, and a TFT coating for maximum tool life and minimum adhesion.

Also, It has a 90-degree countersink to improve chamfering, reduce the need for deburring, and to support the entering of XD drills.

The correction of the countersink gives this new drill exceptional process reliability, according to the developer. Shank diameter tolerance is h6 according to DIN 6535 HA. It has a 150-degree point angle and point geometry designed for the best positioning accuracy. All together, these features provide positioning accuracy, repeatability, and optimal alignment and guidance for the XD drill. In turn, these factors enhance productivity, maximize stability, and raise workpiece quality.

Both the Walter Titex X·treme Step 90 and the X·treme Pilot Step 90 for XD solid carbide chamfering drills have a wide application range, and are engineered for use on steel, stainless steel, cast iron, aluminum, heat-resistant alloys, and hardened steels, as well as composites and plastics.