smooth drilling

smooth drilling

[′smüth′dril·iŋ]
(engineering)
Drilling in a rock formation in which a fast rotation of the drill stem, a fast rate of penetration, and a high recovery of core can be achieved with vibration-free rotation of the drill stem.
References in periodicals archive ?
The advanced drilling control guarantees smooth drilling, and is gentle to drill steels.
Coupled with a 40:1 transmission, these machines yield a smooth drilling experience in all ice-depth conditions.
The system reacts instantly, in a progressive manner, to ensure smooth drilling.
These features ensure smooth drilling and good flushing characteristics with easy removal of drill cuttings.