percussion drill

percussion drill

[pər′kəsh·ən ‚dril]
(mechanical engineering)
A drilling machine usually using compressed air to drive a piston that delivers a series of impacts to the shank end of a drill rod or steel and attached bit.

percussion drill

A drill, 3, usually driven by compressed air, in which the drilling action is the result of a series of impacts transmitted by a drill rod to a drill bit.
References in periodicals archive ?
The LDT 360 Cable Tool Drill Rig was recognized for its percussion drill design which combines the attributes of a cable tool rig with a modern day hydraulic drive system.
The Makita HP1631K/2 710W Percussion Drill is PS83.
Samples from a total of 75 percussion drill holes were recently sent for assaying from its current 5,000 meter resource definition drilling program on Moss.
8km strike length by the BRGM with 16 percussion drill holes for a total 1,784m.
The haul included a Dewalt percussion drill and hammer, tool boxes containing hammers and chisels, a Dewalt cordless jigsaw and blade set, a cordless Makita drill and a Makita drill driver.
Thirteen RC percussion drill holes were completed for a total of 1800 metres.
Historical work on the Bridle Lake Zone, located 2km north of the Cluff Lake Mine on the Hathor option, included two percussion drill holes completed by the mine operator, AMOK (MOKTA), in 1979.
Among the initial requirements of the new process included laser drilling and flow testing on a single machine with the same setup; the laser must have the capability to percussion drill 0.
The mine site is the area previously reported in the October news release of percussion drill results.
The thieves stole tools including a Dewalt percussion drill and hammer, tool boxes containing hammers and chisels, a Dewalt cordless jigsaw and blade set, a cordless Makita drill and a Makita drill driver.
The Venturina mine site was previously explored in 1998 by International Northair and Meridian Gold who completed mapping, sampling, and drilling of 13 RC percussion drill holes.
Historically, the mine site previously was explored by Geomaque who completed in 1997 six percussion drill holes in the mineralized zone where evidence of older tunnel work consists of three adits of short length.