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Diamond waterjet products


For over 70 years, our Company has been producing high precision technical tools in super-hard materials such as synthetic sapphire/ruby, hard metals and fine ceramics for industrial applications.

We are one of the few existing manufacturer producing UHP orifices in natural diamond used for water jet cutting, cleaning, de-burring, nano-tech. dispensers to extremely small diameter applications, starting at 30 microns size or up to 6.000 bar of pressure.

We provide top quality, high precision items, with an evolved design developed throughout years of research. The increasing costs of downtime in the industry have created the need to have longer lasting, increasingly reliable parts. Diamond orifices lasts longer and promote longer life to the supporting equipment.

Our experience in this manufacturing process has brought us to develop the CARAT, Diamond Cutting Head; the concept is entirely new and adapted to modern hydro-abrasive cutting applications.

Key features being a permanently set and prealigned diamond insert along with a rapid mount assembly of head and focusing nozzle.

The most significant advantages are:

  • The material used for the orifice is NATURAL diamond, the hardest material known. The wear resistance of the orifice is significantly
  • superior to synthetic diamond and of course no comparison to sapphire and ruby orifices.
  • The water stream is ALWAYS aligned and maximizes the cutting performance and a correct wear of the abrasive nozzle.
  • The result is an increase of the cutting speed and the service life of the abrasive nozzle improves up to 30 percent.
  • The unique features of the diamond together with the special CARAT design allows the maintenance of a coherent stream for a longer time with the best cutting power and performance. The abrasive flux is also increased and more regular.
  • CARAT cutting head was designed to be of reduced mass and easy to handle. It is composed of only three elements in addition to the abrasive nozzle which is the only interchangeable part. This aspect substantially reduces the times due to replacement of wear parts and other critical components common to other more complex cutting heads.
CARAT is a wise investment for any waterjet system that not only optimizes the cutting performance but reduces appreciably the hourly operating costs.


Quality control is the topic during every step of the production process, from the raw material selection in terms of finest stones to the crystal orientation ensuring the strongest and most resistant surface.
Our attention to every detail, is your guarantee of constant quality and precision.



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Gardella s.r.l. - Via Fratelli Kennedy 23/25 - 27058 Voghera (PV) - P. IVA: 01776460188 - n.di iscrizione al Registro Imprese 24817/1998 Pavia