Shotblasting consists of the high-speed projection of an abrasive onto a surface to change its physical state or mechanical properties. This may entail cleaning or preparing surfaces to ensure that paint or other preparations to be applied will adhere perfectly to them, eliminating rust, corrosion and dirt or giving metal the desired roughness. Shotblasting is also widely used to harden a surface by creating surface tension. This is known as shot peening. The same process can be used to de-stress surfaces after machining or welding.

Different types of machine are used for different shotblasting processes, depending particularly on the type of workpieces to be treated and how they are loaded:

If a customer has a workpiece for which none of the above systems is exactly suited, we at MEBUSA can produce customised equipment tailored perfectly to the relevant process.

Suspended load

The workpiece loading systems of suspended load machines enables them to be easily incorporated into production line processes. As the name indicates, workpieces are suspended from a hoist that runs on a rail. This rail may be specific to the machine itself or part of a continuous process line.

The machine comprises a shotblasting box covered by wear-resistant steel plate with anti-abrasive rubber seals on the doors. Components are hung from a hook manually or by a robot, while smaller items can be bulk loaded into tailor-made baskets. The hook carrying the workpieces moves into the box, but the hoist and rail remain outside it. The turbines are installed facing the workpiece, which is swung and rotated on its vertical access to ensure that the whole surface is shotblasted properly. The number and placement of the turbines varies depending on workpiece size and on their rated power. At the end of the shotblasting process, the workpiece is removed and passed on to the operator.

Articulated table

Articulated table shotblasters are highly versatile machines that come in two types depending on the material used to make the drum: metal for large, heavy workpieces and rubber cladding for smaller workpieces.

They comprise a shotblasting box containing a C-shaped tilted drum into which the workpieces to be blasted are loaded. This can be done manually or via an automatic loading skip, to make things easier for the operator. Once the workpieces have been loaded, the drum begins to rotate, so that the workpieces inside it move in a flow. At the same time, turbines at the top blast abrasive onto the moving workpieces. The combination of collisions between workpieces and the jet of abrasive give them a good finish. At the end of the cycle, workpieces are unloaded by putting the drum into reverse. They can be unloaded into the skip or onto a vibrating belt for easy pick-up.

Rotary table

Rotary table shotblasters can handle various tasks at high performance levels, provided that only one side of the workpiece needs to be treated.

They comprise a shotblasting box with a side door and turbines at the top facing a rotary table at the back of the box. Workpieces are placed on the table directly or on spindles provided, and once the door is closed the table begins to rotate, exposing all the workpieces to the jet of abrasive.

Machines can be built with 2 doors and the tables interlocked with the doors. This means that when one door is closed and workpieces are being shotblasted, the other door can be open to enable more workpieces to be loaded conveniently onto the table.


Tunnel-type shotblasters are suitable for blasting very long workpieces or long runs of small workpieces.

They comprise a shotblasting box with a number of turbines, which can be installed at the sides, at the top or even at the bottom to blast all the surfaces of the workpieces. They have an infeed table and an outfeed table, and workpieces travel horizontally through the box. They may move on a metal belt, a rubber mesh, rollers, etc depending on the needs of each customer.

Downstream from the shotblasting box, a second-stage blower box and cleaning roller can be installed to ensure that the workpieces exit the machine clean and reach the outfeed table free from shot.

Customised equipment

Over 30 years of engineering experience at JAUREGUI mean that we can manufacture customised equipment. We cannot only design a shotblaster that meets the treatment needs for specific workpieces but can also provide solutions for workpiece travel, handling and loading, integration into treatment, injection or painting lines, etc. the possibilities are endless, as each customer and each project are unique.