For Sale Used 2016 Gaspari Mnetotti PGM 2200/18 POLISHING LINES FOR MARBLE GRANITE AND QUARTZ Leasing Available Leasing as low as $11,525.00**

Polishing is performed thanks to the combination of
the abrasive head movements and the movement of
the slabs on the conveyor belt.

• Welded one-piece bench. The sliding surface of the belt is accurately milled and ground. A special conveyor belt moves over the bench. The belt is stiffened to avoid jerking movements.
• The belt is powered by an epicycloidal motor
  reduction unit. The speed is regulated by an
  inverter and is accurately monitored by an
  encoder on an idle roller.
• Spindle bridge. This is a large welded structure. The spindles are set in the middle of the section to ensure maximum stability. The bridge is
  connected to sliding blocks by means of hinges.
  These sliding blocks move on ground roller tables which are oil-lubricated and protected by
  stainless steel labyrinths.
• The bridge is powered by two reduction units, whose speed is regulated by an inverter.
• The racks and pinions have inclined teeth so as to improve the smooth running of the machine.
• The chromium sleeves for the vertical movement of the polishing heads are housed in the spindle group, made up in aluminium casting. This
  upwards/downwards movement and the working
  pressure are performed by two pneumatic
  cylinders which guarantee the synchronised
  movement of the slabs under the polishing
  heads.
• An automatic pressure regulating unit ensures that the working pressure required remains
  constant.
• A special electronic device monitors the
  consumption of the abrasives on each head.

• This enables the operator to control the position of each head at any given moment and makes it possible to avoid undesired contact with the belt.
  All the functions of the machine, the control of the head movements, the monitoring and
  position of each individual slab are programmed
  and controlled by means of a PLC.
• A very last generation industrial PC, without hard-disk and worn parts, has the function of terminal board on the machine and allows an easy management by the operator, by displaying all the functions and the working parameters.
• The slabs profile reader is a fixed electronic device, which through a number of transmitting and receiving photo cells read. The shape of the slabs without any physical contact and
  independently from the slabs thickness. A special
  roller covered with rubber, linked to an encoder
  cross checks the complete reading of the slabs
  while this is moving from the roller table to the
  polishing machine.
• The machine is equipped with an automatic
  lubrication system so that the correct quantity
  of lubricant is supplied to all the necessary
  machine parts.
• The belt and bridge speeds are regulated by a remote control appropriately placed at the front of the machine itself.
• In compliance with current safety regulations, the safety of the operator is ensured by a sliding door system made of fono-absorption reinforced resin-glass structure. All the closures are
  protected by timed blocks so as to avoid any
  undesired contact with the moving machine
  parts.
• The control panel for the pressure regulators and the head descent selectors is housed in a
  completely watertight stainless steel structure.
  Unlike in many other makes of machines, the
  control panel is located above the doors so that it is protected from waste water and undesired
  infiltration. This ensures the maximum reliability
  of all electric and pneumatic components.

§  Minimum   thickness                                                                1 cm.

§  Width                                                                                      220 cm.

§  Number      of heads                                                                18 nr.

§  Diameter    of heads                                                           470 mm.

§  Speed of spindles bridge                      from 0 to 6.000 cm./min.

§  Belt speed                                                  from 0 to 300 cm./min.

§  Abrasive head motor power                                                 11 kW.

§  Bridge motor power                                                       2 x 7,5 kW.

§  Belt motor power                                                                     3 kW.

§  Cleaning brush motor power                                              1,5 kW.

§  Total power installed                                                          217 kW.

§  Water requirements                                                     600 lt./min.

§  Compressed air                                                              720 lt./min.

This device makes it possible to lock the
operating head at a fixed and constant position in
relation to the slab, usually 10 mm. above it, in a
stable and repetitive manner.

This is achieved with the use of an oleodynamic
device able to rigidly lock the head in the selected
position under the impulse of a control set in the
working programme.

Taking advantage of the fact that the oil cannot
be compressed, stable, accurate and repetitive
locking can be achieved in a selected position,
which is impossible to do with normal pneumatic
actuators.

As a matter of fact it is possible to create,
according to the material to be processed, a
mapping of the working pressures on each
position of the slab, that is in the entrance phase
or the exit one or on the edges different from the one set for the central part of the slab.

Using the manual regulators, obviously, this is
impossible to perform.