NC center drills 90°

Solid carbide NC spot drill 90 degrees

The tip angle distinguishes spot drills from regular metal drills and twist drills. Depending on the model, it can be 90, 120, or even 142 degrees, for example. With this specific tip angle, a 90° solid carbide (VHM) NC spot drill achieves very stable and delay-free guidance from the first moment. The precise tip angle design is highly dependent on your particular application. Therefore, when ordering, be sure to note that VHM NC spot drills come in 90, 120, and 142-degree tip angles, among other variants. Should you not immediately find the version you need in the Nachreiner selection, please contact us. In almost all cases, we can assist you by offering suitable alternatives or, if necessary, custom designs.

Precision spot drilling with VHM NC spot drill 90°

When working with milling machines, CNC or NC machines, as well as boring machines, precise spot drilling is often essential to prevent twist drills from wandering when drilling the actual hole later. Using spot drills can save time and money by reducing wear and rejects caused by drill wandering, or even eliminating it altogether. Unlike center drills, VHM NC spot drills do not have a centering tip, as this is typically not needed with most NC machines due to their inherent stability. This results in significantly better tool life and machining speed. The difference between these and conventional HSS or HSSE NC spot drills lies in the material of the spot drills themselves. The VHM NC spot drills are ground from a solid carbide blank. In other tools, the carbide is merely soldered or screwed onto a steel or other base material.

Advantages of solid carbide in NC spot drills

Using VHM allows NC spot drills to achieve significantly higher tool life and cutting speeds, which considerably reduces the time required for pre-drilling workpieces. However, please note that a VHM NC spot drill is not intended for creating a full-depth hole, as it lacks the necessary guiding chamfers for this purpose. Another key characteristic of VHM NC spot drills is their short length, which enhances the precision of the guiding machine, as drill wandering becomes more likely with increasing drill length. In addition to high-quality VHM NC spot drills in 90°, 120°, and 142° angles, Nachreiner also offers HSS and HSSE versions with various tip angles. There are also affordable complete sets available for all spot drills. Many customers choose to have their dull VHM NC spot drills and other metal cutting tools refurbished by us. Resharpening can restore high-quality tools to nearly new condition, thereby significantly extending their lifespan.