Limestone Slab Polishing Line Machine

Suitable for polishing slabs, headstones and kerbs.
Ideal for safe night shift operation, without operator.
Max. polishinh length unrestricted.

FEATURES
BASE
Monolithic high-thickness steel base electro-welded with rectified sliding surface.
INTERCHANGEABLE WEAR-PROOF SURFACES
Made with special steel (UBNW.1.446), thickness 3 mm, to guarantee planarity over time and facilitate maintenance.
SURFACE TREATMENT
All parts are treated inside our Company, with hand sand-blasting, cold galvanising and coating with bi-component epoxy base. On request, base and shoulders can be treated with Cataphoresis or hot dip galvanising. All screws are stainless steel.
3-BELT CONVEYOR
Driven by two large-diameter drums and inverter adjustable speed. Unique system to clean and lubricate the belt to ensure uniform sliding. The drive drum is coated with vulcanised rubber to prevent slipping and ensure flow smoothly.
SPINDLE HOLDER BEAM
Sliding on the shoulders fitted with roller cage in oil bath, protected by sealed stainless steel telescopic guards. Hardened steel sliding elements interchangeable and installed on the shoulders and bridge. The spindles are housed in the centre of the beam to ensure complete stability and eliminate any possibility of vibration.
BRIDGE TRANSLATION
With pinion and rack. Central gearmotor and antirotation bar with large diameter. Shifting speed controlled from inverter).
CALIBRATION UNITS
- Calibrator spindle made with heavy steel metalwork with rectified chromeplated sleeve, that slides through cast iron bushing to absorb vibrations during processing. On the spindle plate where it serves as a flywheel and is dynamically balanced, there are calibrator rings with diamond sectors installed on them (Ø 670-870-1050 mm). Electric drive can be 22 or 30 kW.
- An automatic system combined with motor absorption acts on conveyor speed, slowing it in case of excessive overload, making the spindle stop and automatically lift. The spindle is automatically repositioned with absolute precision when the operating cycle starts back up again. The calibrator is managed from the touch screen for all of its automatic and manual functions. Automatic positioning at the pre-selected height with centesimal precision.
POLISHING UNITS
- Cast iron polishing spindles, installed in the centre of the beam, with thick and rectified chrome-plated steel shaft, sliding on bronze bushing, complete with pneumatic cylinder for lifting abrasive carrier plate.
Each spindle is fitted with a pressure gauge to control pressure and counter-pressure to balance the head during the work.
- Motors. 7.5 or 11 kW motors with single or sequential start-up. Drive transmission through high-output pulleys and belts.
- Ø 470/510 aluminium alloy polishing plates complete with Frankfurt fittings for seven abrasives. They are equipped with a multidirectional shock absorbing system to ensure maximum operating homogeneity and efficiency of the abrasive.
- Automatic centralised lubrication system of the spindles with the possibility of setting quantities and intervention.
- Abrasive finished. The machine is equipped with a system to set the thickness of the piece being processed based on which, a sensor installed on each head, calls the attention of the operator to replace the abrasive, when finished.
- Slab-guide supports with screw movement through flywheel from a unique station, complete with stainless steel slab-guide.
- Material presence detection unit to control the automatic up/down movement of heads in case of discontinuity between pieces.
SAFETY AND PROTECTIONS
- Front PLT doors with interlocking limit switch to avoid opening before the spindles stop. Side and rear stainless steel guards, easy to inspect.
ELECTRONICS: THE "THINKING HEART" OF LMS
- Reliable. After careful testing, the parts are chosen from the leading companies in the specific sectors. To minimise the probability of failure or interference, a modern “can open” network system is installed on board, which drastically reduces the number of cables between sections.
- Software developed entirely by GMM, guaranteed over time, improvable and most of all customizable according to customer requirements.
- 12" Touch Screen. Interactive graphics for complete machine cycle management with start-up in sequence of spindles, conveyor motor and bridge motor. To manage spindle down/up based on piece presence.
To view the abrasive consumption status for each head.
- Data base. Broad possibility to store large amounts of informations about work done or in process.

FEATURES
BASE
Monolithic high-thickness steel base electro-welded with rectified sliding surface.
INTERCHANGEABLE WEAR-PROOF SURFACES
Made with special steel (UBNW.1.446), thickness 3 mm, to guarantee planarity over time and facilitate maintenance.
SURFACE TREATMENT
All parts are treated inside our Company, with hand sand-blasting, cold galvanising and coating with bi-component epoxy base. On request, base and shoulders can be treated with Cataphoresis or hot dip galvanising. All screws are stainless steel.
3-BELT CONVEYOR
Driven by two large-diameter drums and inverter adjustable speed. Unique system to clean and lubricate the belt to ensure uniform sliding. The drive drum is coated with vulcanised rubber to prevent slipping and ensure flow smoothly.
SPINDLE HOLDER BEAM
Sliding on the shoulders fitted with roller cage in oil bath, protected by sealed stainless steel telescopic guards. Hardened steel sliding elements interchangeable and installed on the shoulders and bridge. The spindles are housed in the centre of the beam to ensure complete stability and eliminate any possibility of vibration.
BRIDGE TRANSLATION
With pinion and rack. Central gearmotor and antirotation bar with large diameter. Shifting speed controlled from inverter).
CALIBRATION UNITS
- Calibrator spindle made with heavy steel metalwork with rectified chromeplated sleeve, that slides through cast iron bushing to absorb vibrations during processing. On the spindle plate where it serves as a flywheel and is dynamically balanced, there are calibrator rings with diamond sectors installed on them (Ø 670-870-1050 mm). Electric drive can be 22 or 30 kW.
- An automatic system combined with motor absorption acts on conveyor speed, slowing it in case of excessive overload, making the spindle stop and automatically lift. The spindle is automatically repositioned with absolute precision when the operating cycle starts back up again. The calibrator is managed from the touch screen for all of its automatic and manual functions. Automatic positioning at the pre-selected height with centesimal precision.
POLISHING UNITS
- Cast iron polishing spindles, installed in the centre of the beam, with thick and rectified chrome-plated steel shaft, sliding on bronze bushing, complete with pneumatic cylinder for lifting abrasive carrier plate.
Each spindle is fitted with a pressure gauge to control pressure and counter-pressure to balance the head during the work.
- Motors. 7.5 or 11 kW motors with single or sequential start-up. Drive transmission through high-output pulleys and belts.
- Ø 470/510 aluminium alloy polishing plates complete with Frankfurt fittings for seven abrasives. They are equipped with a multidirectional shock absorbing system to ensure maximum operating homogeneity and efficiency of the abrasive.
- Automatic centralised lubrication system of the spindles with the possibility of setting quantities and intervention.
- Abrasive finished. The machine is equipped with a system to set the thickness of the piece being processed based on which, a sensor installed on each head, calls the attention of the operator to replace the abrasive, when finished.
- Slab-guide supports with screw movement through flywheel from a unique station, complete with stainless steel slab-guide.
- Material presence detection unit to control the automatic up/down movement of heads in case of discontinuity between pieces.
SAFETY AND PROTECTIONS
- Front PLT doors with interlocking limit switch to avoid opening before the spindles stop. Side and rear stainless steel guards, easy to inspect.
ELECTRONICS: THE "THINKING HEART" OF LMS
- Reliable. After careful testing, the parts are chosen from the leading companies in the specific sectors. To minimize the probability of failure or interference, a modern “can open” network system is installed on board, which drastically reduces the number of cables between sections.
- Software developed entirely by GMM, guaranteed over time, improvable and most of all customizable according to customer requirements.
- 12" Touch Screen. Interactive graphics for complete machine cycle management with start-up in sequence of spindles, conveyor motor and bridge motor. To manage spindle down/up based on piece presence.
To view the abrasive consumption status for each head.
- Data base. Broad possibility to store large amounts of information about work done or in process.

The NPM polishing machines are available also in the combined version for calibrating and polishing of marble slabs. The first mobile bridge (PM version) installs calibrating spindles, capable of calibrating the useful working width, the second bridge installs honing spindles, the number depending on the version, for total honing/polishing of the width working efficiency of 2150 mm.

FEATURES
BASE
Monolithic high-thickness steel base electro-welded with rectified sliding surface.
INTERCHANGEABLE WEAR-PROOF SURFACES
Made with special steel (UBNW.1.446), thickness 3 mm, to guarantee planarity over time and facilitate maintenance.
SURFACE TREATMENT
All parts are treated inside our Company, with hand sand-blasting, cold galvanising and coating with bi-component epoxy base. On request, base and shoulders can be treated with Cataphoresis or hot dip galvanising. All screws are stainless steel.
3-BELT CONVEYOR
Driven by two large-diameter drums and inverter adjustable speed. Unique system to clean and lubricate the belt to ensure uniform sliding. The drive drum is coated with vulcanised rubber to prevent slipping and ensure flow smoothly.
SPINDLE HOLDER BEAM
Sliding on the shoulders fitted with roller cage in oil bath, protected by sealed stainless steel telescopic guards. Hardened steel sliding elements interchangeable and installed on the shoulders and bridge. The spindles are housed in the centre of the beam to ensure complete stability and eliminate any possibility of vibration.
BRIDGE TRANSLATION
With pinion and rack. Central gearmotor and antirotation bar with large diameter. Shifting speed controlled from inverter).
CALIBRATION UNITS
- Calibrator spindle made with heavy steel metalwork with rectified chromeplated sleeve, that slides through cast iron bushing to absorb vibrations during processing. On the spindle plate where it serves as a flywheel and is dynamically balanced, there are calibrator rings with diamond sectors installed on them (Ø 670-870-1050 mm). Electric drive can be 22 or 30 kW.
- An automatic system combined with motor absorption acts on conveyor speed, slowing it in case of excessive overload, making the spindle stop and automatically lift. The spindle is automatically repositioned with absolute precision when the operating cycle starts back up again. The calibrator is managed from the touch screen for all of its automatic and manual functions. Automatic positioning at the pre-selected height with centesimal precision.
POLISHING UNITS
- Cast iron polishing spindles, installed in the centre of the beam, with thick and rectified chrome-plated steel shaft, sliding on bronze bushing, complete with pneumatic cylinder for lifting abrasive carrier plate.
Each spindle is fitted with a pressure gauge to control pressure and counter-pressure to balance the head during the work.
- Motors. 7.5 or 11 kW motors with single or sequential start-up. Drive transmission through high-output pulleys and belts.
- Ø 470/510 aluminium alloy polishing plates complete with Frankfurt fittings for seven abrasives. They are equipped with a multidirectional shock absorbing system to ensure maximum operating homogeneity and efficiency of the abrasive.
- Automatic centralised lubrication system of the spindles with the possibility of setting quantities and intervention.
- Abrasive finished. The machine is equipped with a system to set the thickness of the piece being processed based on which, a sensor installed on each head, calls the attention of the operator to replace the abrasive, when finished.
- Slab-guide supports with screw movement through flywheel from a unique station, complete with stainless steel slab-guide.
- Material presence detection unit to control the automatic up/down movement of heads in case of discontinuity between pieces.
SAFETY AND PROTECTIONS
- Front PLT doors with interlocking limit switch to avoid opening before the spindles stop. Side and rear stainless steel guards, easy to inspect.
ELECTRONICS: THE "THINKING HEART" OF LMS
- Reliable. After careful testing, the parts are chosen from the leading companies in the specific sectors. To minimize the probability of failure or interference, a modern “can open” network system is installed on board, which drastically reduces the number of cables between sections.
- Software developed entirely by GMM, guaranteed over time, improvable and most of all customizable according to customer requirements.
- 12" Touch Screen. Interactive graphics for complete machine cycle management with start-up in sequence of spindles, conveyor motor and bridge motor. To manage spindle down/up based on piece presence.
To view the abrasive consumption status for each head.
- Data base. Broad possibility to store large amounts of information about work done or in process.

The LM 2100 RS is available in the combined version for polishing slabs and for calibrating and polishing strips and/or tiles. The calibrating is performed by special spindles that can be equipped with diamond tools with useful working width of 650 or 1000 mm according to the version. The calibrating spindles are installed at a fixed position at the entry of the polishing machine while the dressing spindles are installed on a mobile bridge and can operate on a useful width of 2100 mm.

AUTOMATIC BELT POLISHING MACHINE FOR MARBLE SLABS
Thanks to CEMAR’s over twenty years experience in surface treatment of marble and granite, GMM present the most advanced version of LMS 2100 belt polishing machine for marble slabs. Respecting the philosophy that has always characterized the excellent CEMAR product, the new series of polishing machines for marble slabs is made using robust, accurate and reliable mechanics. In conjunction, the machine has advanced electronic and technology solutions to ensure maximum quality of work, high production yields and reduction of waste. All this ensure low running and maintenance costs, with high durability.
FEATURES
BASE
In sturdy electro-welded steel structure with rectified sliding plane covered with replaceable wear plates made of 3 mm thick special steel to ensure flatness and easy maintenance over time.
SURFACE TREATMENTS
All components are treated in our company with sandblasting by hand, cold galvanizing and painting with two component epoxy primer. On request, base and shoulders can be hot dip galvanized.
BELT
Pulled by two drums of large diameter. Speed adjustable by inverter. Two unique systems for cleaning and lubricating the belt to ensure flow smoothly.
BEAM
For spindle housing in a sturdy and rigid structure of welded steel. Sliding on the shoulders equipped with roller bearing in oil bath, protected by telescopic guards in stainless steel. Sliding elements made of hardened steel interchangeable and mounted both on the shoulders and on the bridge. The spindles are housed at the center of the beam to ensure complete stability and to avoid any possible vibration.
TRANSLATION OF THE BRIDGE
With rack and pinion. Starting from the version with 12 spindles, the transmission takes place with 2 gearmotors coupled at the bridge ends. Travel speed controlled by inverter.
POLISHERS SPINDLES
In cast iron, with thick chrome-plated steel grounded shaft, sliding on bronze bushes, complete with pneumatic cylinder for raising the abrasives carrying plates. Each spindle is equipped with a gauge for the control of pressure and counterpressure, necessary to balance the head during the working. The cooling water passes inside the shaft for a better and uniform distribution on the materials being processed.
MOTORS
11 kW/15 HP motors, with individual or in sequence start-up. Motion transmission with high performance belts.
ELECTRONICS: “THINKING HEART” OF THE LMS 2100
- Reliable. After careful controls, components are selected among leading companies in specific sectors (mainly Siemens or Schneider-Telemcanique).
- To make minimum the probability of failure or interference, on board of the machine is adopted modern network system "can open" which drastically reduces the number of cables between one section and the other.
- Software. Developed entirely in GMM, guaranteed over time, especially improved and customized according to customer requirements.
- Inverters. The roller conveyors and specific rollers in the entry are handled by inverters, like all the other moving parts, to balance the fl ow of material and optimize the speed of each step.
- Optical detector 120 photocells, to scan in a sequence the shape of entering slabs, done in RS485 protocol (noise free), it transmits the shape of the slab to the control unit to better manage the ascent and descent of the heads, according to the various selectable working cycles.
- Ultrasonic sensor, positioned at the entrance, to detect the material thickness. Enables fully automatic management of the abrasives consumption of each single head.
- Automatic lubrication management, for planning the quantity of lubricant to be dispensed and the dispensing times.
- Touch Screen 12". Monitor with "easy to use" interface, interactive graphics for the complete management of the machine cycle with sequential startup spindle motors, belt and bridge motors. It drives the spindles up-down stroke according to the shape of slabs. Display of abrasive consumption status for each head.
- Data base. Large possibility to store various information about the work done or in progress.

The HPM polishing machines are available in the version for strips, with useful working width of 650 or 1000 mm and are supplied in combined solutions for calibrating and dressing-polishing. The spindle of the HPM polishing machines can house plates 580 mm. in diameter. The calibration takes place with rotating plates equipped with diamond tools., installed in a fixed or mobile position.

FEATURES
PLT GOLD SERIES - TANGENTIAL HEAD
It has a range of very important features that differentiate it from the competition: treated aluminium box to obtain lightness and elasticity for absorbing blows, arm opening and closing by means of a hardened, cemented and ground cam system, total consumption of the abrasive, main shaft reinforced, bearings of the highest quality and ready for the fl at marble connection.
PSG GOLD SERIES - PLANETARY HEAD
It is built with a treated aluminium box for lightness and elasticity when absorbing blows, hardened and ground gears manufactured by our numerical control centres and bronze covers for simple economic maintenance.

REFERENCE 103 006 016
THICKNESS MAX A POLISH 100 mm
MACHINE PULICANTOS
DIAMETER PADS 130 mm
MARK / MODEL SSX MD.TE
PROGRAMMING DIGITAL
YEAR OF MANUFACTURING 2006
GREASE MANUAL
HEADS HYDRAULICS
OVERALL DIMENSIONS 7000 X 2300 mm
NUMBER OF POLISH 6
POWER 40 CV
CHAMFERING 1 TOP + 1 BOTTOM
SWING SISTEM BY RODS MAKES STRAIGHT EDGE AND ROUND

Specifically designed to be used with diamond tools, this type of head is particularly suitable for the roughing phase of hard materials. Characterised by high removal capacity and perfect flatness of the material, this head also ensures negligible wear of tools and high reliability.

This machine is used for polishing small slabs of marble.

PLATE MARBLE POLISHING MACHINE
This efficiency proved machine has been specially designed for thickness gauging and polishing of strips with cut ends. And max. width dimensions 2100 mm. The new PLX 2000 series supported with high technology, can reach top production speeds, whilst reducing consumption, maintenance and depreciation. THE SPINDLE: The PLX 2000 G features powerful, high precision polishing spindles with pneumatic working pressure which easily and perfect polishing any kind of granite.The spindles are entirely processed on CNC using highest quality of the material. Every spindle is assembled in the center of the mobile beam.
The spindles are working at their centre of gravity on the rotation axis so the mechanical play is reduced and this eliminates maintenance works.
The spindle has two electrical motors special tothed belt transmission system that the motors drive by prevents loosening or slipping of the spindles even under stress. The pneumatic system makes use through counter air pressure of the considerable spindle mass to obtain stability to the polishing heads. Counter pressure pneumatic system allows to polish fragile and delicate materials, with low working pressure. The machine controls the lifting movement of the spindles automaticly according to feeding the material
THE BEAM: The spindle holding beam is made of electro - welded steel and moves on exteremely wear resistant cast iron and alloyed bronze slideways. Sliding components are working in an oilbath and protected by stainless steel labyrinth seals. Beam movement is done by two motor reducer system located at the end of the beam to ensure constant and regular beam motion. The beam moves on two side bridges made of electrowelded steel and it has very strong structure to eliminate vibration during the operation. The synchronization shaft located the rear side of the beam provides uniform movement at both beam ends. The bridge moves on bronze alloyed slideways working in oil bath The adjustments, quick format changes and performing very rapid arrangements are some minor themes of high technological feedbacks manufactured for productive flexibility in this machine.

THE TABLE: The uniblock steel chasis designed to provide high rigidity and stability. The surface of the table covered by hard stainless steel to ensure long life of table and conveyor belt. At the ends of the table 2 turned belt drive rollers are installed one of which is free moving, and other one is motorized. The belt drive rollers are made of special steel. The belt is driven by a planetary type gear –motor to provide safe and uniform movement during the process. The conveyor belt speed adjustment is obtained by electronic frequency inverter.
ELECTRICAL AND WATER CONNECTION: The electrical and water connection between machine stationary part and the mobile beam is made by flexible cable chains which assure safer working conditions and a longer life for components. The polishing heads cooling water feed is performed by steel pipes which operates in a fixed position in the center of the spindle. The water cooling pipes can be removed very easily for the periodical clearing for calcereous substances. THE HEADS: A polishing head with swinging arms to hold the tools (abrasive or diamond) is mounted on each spindle. The motion of each swinging arm is obtained by an extremely precise, kinematical and mechanical system that reduce any clearance therefore ensuring low noise and long tools life. The particular geometry, the oscillation angle and frequency of the arms help to obtain high tools efficiency. The lubrication of the mechanical parts is by means of permanent oil bath with automatic lubrication pump. The even operation of the abrasive-holder arm controlled by a gear kinematical motion and the axial elasticity of the head provide large removals and high slab polishing level.
MACHINE CONTROL: The machine is controlled by a PLC (programable logic control) system with a 12 inch Touch Screen color panel for managing to synchronize all the processing parameters by easy interface and operator controls.
PAINT TREATMENT: Surface protected with two coats of bicomponent epoxy paint applied after sand blasting operation.

This machine is made for polishing marble and stone with high quality and high production, its used for polishing marble with different sizes from 20 cm up to 85 cm of width. and it can be available with different numbers of calibration and polishing heads in order to give the best performance and high efficiency.