Core drill with Weldon shank 19 mm (3/4″) HSS full ground

– Core drills in HSS steel quality are made with a cutting depth of 30 resp. 55 mm
– The core drill is produced in full-cut technology, because it receives a perfect surface finish with optimum chip flow.
– PROJAHN core drills are usable on mobile magnetic core drilling machines or on stationary pillar drilling machines.
– Great cost and time savings because the core drill only drills one ring and not the entire drill diameter. The time saved can be up to a factor of 10, also because complex preliminary work such as B. pre-centering and pre-drilling are not necessary.
– The time saved can be up to a factor of 10, also because complex preparatory work such as B. pre-centering or pre-drilling and boring are omitted
– By reduced material stress, a longer service life of the drill core results in comparison to standard drill bits.
– The pin (with spring) throws out the drill core.
– The pin (with spring) throws out the drill core. Always use coolant and the optimal speed.
– You can find an overview of the recommended speeds on page