Large core drilling rig - GIF

[Altair]

Large core drilling rig.




Previously:

Masonry hole saw - GIF
Core drill drilling a 24" hole - GIF
Diamond core drilling - GIF
Giant core barrel for drilling foundations - video and photo
Garbage dump core sample - photo

[Toolmaker51]

Interesting, surprised by that rpm, a serious rate of feet per minute, though hardly seems enough water to flush the cut. I notice an impact wrench advances the feed.

[IntheGroove]

Let's hope that thing is cutting through a good amount of rebar...

[hemmjo]

I am not seeing an impact wrench. It seems it is using a pipe in the 4 spoke thing at the top to advance the cutter?

[cognitdiss]

I am not seeing an impact wrench. It seems it is using a pipe in the 4 spoke thing at the top to advance the cutter?

Agreed, that is how mine have worked.

[Toolmaker51]

You 3 are correct. at 0'.08" there is sound of impact or rotohammer; same time as the cheater bar goes onto the 4 spoke feed wheel.
By shutting browser and toolbar menus, then able to see whole thing. The bit is advanced very slightly, maybe 2 degrees of the feed wheel.

[Wildwilly]

That "sound" that you're hearing is the worker tapping on the vessel being cut.