défaillance de l'arbre de la pompe

The specifications of a drilling machine significantly affect its price. Machines with higher power ratings, precision controls, advanced technology, and additional features such as automatic feed, depth control, and multiple drill bit sizes usually come at a premium. For example, CNC (Computer Numerical Control) drilling machines offer unparalleled precision and automation, making them highly sought after in manufacturing environments, but they can carry a price tag in the range of $100,000 to $500,000, depending on the specifications.


...

  • 1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.
  • ...