LCR

Horizontal edge polisher for straight edge with pencil rounds (up to 4 cm) or 45° bevels (up to 6 cm)

Pencil rounds at peak performance

LCR is a special polisher for straight edges and pencil rounds (max. thickness 4 cm) or regular chamfers (max thickness 6 cm). Its unique, original Marmo Meccanica design makes it possible to perform very small and high-quality pencil rounds at 30-40 meters/h (20-26 ipm). The counter-oscillating system guarantees high speed and performances with very low power consumption: only 0.75 kW for all six heads devoted to pencil rounds, in line with Marmo’s philosophy of doing better with less. LCR works perfectly with all kinds of natural, synthetic, engineered, and ceramic material.
Continuous working schedule: slabs are loaded on the machine one after the other, run through a series of mandrels, and go out with a polished and chamfered edge.


Models and accessories:

The LCR machine is supplied with two units of three counter-oscillating mandrels each, that can carry out spans of about 90° through an original and innovative mechanism invented by MM. That mechanism generates a  natural, harmonious motion. It makes the masses of the two oscillating units balance out each other (and the reversing stresses compensate), thus allowing high oscillating frequencies. Alternatively, the two units of  mandrels can be used in a static way (opposed at 45°), thus performing “classic” flat chamfering.

Briefly described, the LCR structure is composed of:

  • no. 1 INGOING CALIBRATING/DRIP-SIZING UNIT, both crosswise and lengthwise adjustable, to gauge the thickness of the material with a varying depth (max. 6 cm from the edge) or, rotated to the horizontal axis position, for dripstone cutting.
  • no. 7 MANDRELS FOR SMOOTHING AND POLISHING (up to 9 on request), the first of which equipped with a mechanical stop  or diamond tool;
  • no. 2 UPPER AND LOWER 45° CHAMFERING MANDRELS FOR PRECHAMFERING DIAMOND TOOLS, equipped with a mechanical stop, by which it is possible to establish the pencil-round edges dimensions;
  • no. 2 GROUPS OF 3 MANDRELS EACH, COUNTER-OSCILLATING (mechanical stop on the 1st one of each group), for pencil-round chamfers (max. thickness 4 cm) and 45° flat chamfers (max. thickness 6 cm).

Extra accessories and supplementary groups are available on request.


Main features:

  • Dimensions from mm 5102 x 1735
  • Power from 27,5 Kw
  • 2 groups of 3 opposing mandrels, counter-oscillating of about 90° through a MM mechanism that generates a high frequency harmonious motion
  • The 1st polishing mandrel is supplied with a mechanical stop
  • Mandrels protection by a self-draining, mechanical labyrinthed system (no bellows used)
  • The system of transport guarantees a very good stability and reduces the breaking of slabs
  • Motorized pressing bar
  • Extractable supporting bar for large pieces
  • Conveyor belt speed adjustable by control panel
  • Control panel assembled on adjustable arm, always reachable
  • No need of foundations, 2 drainage points

Pencil rounds at peak performance

LCR is a special, straight polisher that can round and polish the two corners of a flat edge, besides chamfering them at 45°, with quantity performances comparable to an edge polisher for flat edges and quality performances comparable to an edge polisher for round edges. All this thanks to the original and innovative mechanism invented by Marmo Meccanica applied to the 2 groups of 3 counteroscillating mandrels each that generates a natural, harmonious motion with high oscillating frequencies.
Continuous working schedule: slabs are loaded on the machine one after the other, run through a series of mandrels, and go out with a polished and chamfered edge.

  • Dimensions from mm 5102 x 1735
  • Power from 27,5 Kw

Models and accessories:

The LCR machine is supplied with two units of three counter-oscillating mandrels each, that can carry out spans of about 90° through an original and innovative mechanism invented by MM. That mechanism generates a  natural, harmonious motion. It makes the masses of the two oscillating units balance out each other (and the reversing stresses compensate), thus allowing high oscillating frequencies. Alternatively, the two units of  mandrels can be used in a static way (opposed at 45°), thus performing “classic” flat chamfering.

Briefly described, the LCR structure is composed of:

  • no. 1 INGOING CALIBRATING/DRIP-SIZING UNIT, both crosswise and lengthwise adjustable, to gauge the thickness of the material with a varying depth (max. 6 cm from the edge) or, rotated to the horizontal axis position, for dripstone cutting.
  • no. 7 MANDRELS FOR SMOOTHING AND POLISHING (up to 9 on request), the first of which equipped with a mechanical stop  or diamond tool;
  • no. 2 UPPER AND LOWER 45° CHAMFERING MANDRELS FOR PRECHAMFERING DIAMOND TOOLS, equipped with a mechanical stop, by which it is possible to establish the pencil-round edges dimensions;
  • no. 2 GROUPS OF 3 MANDRELS EACH, COUNTER-OSCILLATING (mechanical stop on the 1st one of each group), for pencil-round chamfers (max. thickness 4 cm) and 45° flat chamfers (max. thickness 6 cm).

Extra accessories and supplementary groups are available on request.


Main features:

  • 2 groups of 3 opposing mandrels, counter-oscillating of about 90° through a MM mechanism that generates a high frequency harmonious motion
  • The 1st polishing mandrel is supplied with a mechanical stop
  • Mandrels protection by a self-draining, mechanical labyrinthed system (no bellows used)
  • The system of transport guarantees a very good stability and reduces the breaking of slabs
  • Motorized pressing bar
  • Extractable supporting bar for large pieces
  • Conveyor belt speed adjustable by control panel
  • Control panel assembled on adjustable arm, always reachable
  • No need of foundations, 2 drainage points