The development of more and more specific technologies and the demand for obtaining a higher working quality have helped to create a grinding and polishing machine with extraordinary performances for finishing tubes and bars up to a diameter of 250 mm.

Ruggedness and simplicity of use make the model F1 the point of reference for many companies which have chosen BOSSI as synonymous with quality and top performances.

This model has been conceived for obtaining a high degree of stock removal and at the same time a finishing level (satin-finishing and polishing) that can meet all requirements.

The structure of the machine is particularly rigid and designed to eliminate any source of vibration and also the cabin is integrated in the structure.

Working is wet when using abrasive belts and/or dry with polishing mops.

The replacement of abrasive belts is made on the front of the unit very quickly, with no need to enter the machine.

The heads operate above the piece, vertically working on it; the piece is transported by a rugged roller conveyor having rolls very closed each other and able to support a weight up to 600 Kg/mt.

The feeding of the piece to be worked is made by means of independent and motorised pinch-rolls, with stepless adjustment of feeding speed by inverter.

Helped by the new technologies, the F1 machine adopts an excellent system for controlling and recovering the working pressure, providing pressure that is constant and adjustable on all the processed pieces.

The machine is equipped with a washing system of the base for removing the working slurries and an internal washing system of the working units controlled by PLC.

To further reduce maintenance time, a centralised greasing system allows homogeneous distribution to all the points of the machine.

Diameter change is automatically made under PLC control, as well as the electronic control of all the line, with possibility of storing the worked diameters, the variables and the speed parameters;

a self-diagnosis system directly signals to the operator any anomaly present on the machine.

Planetary brushing machine Mod. PL 400/330 for working diameters up to 330 mm.: the machine is equipped with 2 brushes and the frame, properly dimensioned, holds the rotary drum mounted on ball bearings and controlled by inverter; the two brush opposite spindle groups are positioned on it, with motorised movement of approaching and retraction from the tube to be worked.
The weight of 5100 Kg. and the dimensioning of the machine allow a constant working, without vibrations.
Simple replacement of brushes thanks to the wide opening of the door with vertical sliding.
The machine can be installed on any tube-mill.

The model SF 3000/200 is the development of the traditional centreless machine. After many years of experience in this field, BOSSI designs and produces a new machine suitable to grinding, brushing and polishing of cylindrical surfaces. This model includes several advantages in comparison with the traditional centreless machines: higher speed (18÷20 mt/min.), less maintenance, simple adjustment for diameter change.