The latest addition to Guhring’s hole-making portfolio is the RT100XF. Created to reduce cycle times for difficult-to-machine materials and special applications in series production, the hard drilling line is said to be extremely resilient to potential breakages.

This bold claim is based upon the carbide grade developed by Guhring for the RT100XF, which performs a balancing act between hardness and toughness. The special structure of the grade has a re-sharpening effect, so breakages that normally accelerate tool wear no longer occur. This effect is supplemented by the company’s existing nanoFire coating system, which has been created by a specially designed pre and post-treatment that smooths the coating and makes it significantly more robust.
RT100XF supports the robust performance of the carbide grade and surface treatment with an early double margin support that enhances coaxiality to deliver the desired bore size and roundness. The drill is suitable for holes from 5xD upwards.
In terms of design, support chamfers are included to ensure running smoothness, while polished flutes reduce heat input and support the fast evacuation of chips. Additionally, the point geometry is protected by a negative chamfer, which makes the cutting edge robust and durable. Rounded edge preparation on the RT100XF produces a stable and efficient cutting edge; this rounding is produced with micron precision, something made possible by Guhring’s manufacturing competence.
Regarding workpiece materials, the through-coolant drills are suitable for structural and case-hardened steels, free-cutting and heat-treated steels, titanium, Inconel, Nimonic, and Hastelloy.
Offered in 5xD and 7xD, the drills can be purchased in diameters from 3 to 20 mm diameter, in 0.1 mm increments. The series is also available in all common imperial dimensions.
For further information www.guhring.co.uk