NC center drills 90°

NC spot drills 90 degrees

The NC spot drills with 90 and 120-degree tip angles are standard options in industrial and series production, available in both HSS and HSSE versions. At Nachreiner, we offer complete sets of 90-degree NC spot drills. These drills are designed for use in milling machines, boring mills, and NC machines. However, they are not limited to NC and CNC-controlled machines but can be used in all stationary milling and drilling machines for industrial applications and series production of workpieces. NC spot drills with a 90° tip angle are essential when there is a risk of standard drills wandering off course. This can be prevented by pre-drilling and countersinking. While center drills are commonly used for this purpose in hand-guided or geometrically unstable drilling applications, the 90° NC spot drill can skip the centering tip due to the typically high geometric stability and rigidity of the machines used. The precise spot drill guides the primary metal drill with accuracy, which is crucial for maintaining precision in series production and reducing waste from costly misdrills.

The following NC spot drills are available in Nachreiner’s range:

• 90° tip angle
• 120° tip angle
• HSS version
• HSSE version
• NC spot drill sets

If you have additional requirements, it may also be useful to check our range of center drills.

NC spot drills with 90° tip angle

The tip angle is crucial for spot drills, differing from standard twist drills and allowing constant and immediate precision guidance. The tip angle you need depends on the specific application, so please note that the 90° NC spot drills and the 120° tip angle NC spot drills serve different purposes. At Nachreiner, we also offer cost-effective NC spot drill sets in various tip angles and materials. For special requests regarding specifications or material composition, we can provide a custom quote. Contact our expert advisors, who can discuss your requirements with you and potentially recommend alternatives for your application.

Stable and accurate spot drilling with NC spot drills

Centering and countersinking stable, accurate bores for milling machines, boring mills, and NC machines are the primary uses for our HSS and HSSE NC spot drills. The HSSE versions contain five percent cobalt in the alloy, which can improve tool life depending on the application. This alloying also facilitates the machining of high-strength steels and other alloys that may not be efficiently handled with standard HSS drills. Please note that NC spot drills are not suitable for deep drilling, as they lack both the necessary length and the guiding chamfers found in standard twist drills.