Pedrini GALAXY B220MA Polishing Machine For Marble Slabs

The perfect polishing of marble slabs on industrial scale requires a modern line equipped with state-of-the-art technologies.
Pedrini is able to provide the most complete solutions ensuring high production performances, high degree of the polishing quality with low costs of operation and maintenance.
Pedrini polishing lines for marble slabs are designed, manufactured and installed to meet every requirement of each customer
Each polishing line is set according to the available spaces and is customized thanks to the use of a wide range of options, machines and auxiliary equipment designed to meet any kind of production need and automation level.
The polishing machine Galaxy B220MA is the basic machine in the polishing lines proposed by Pedrini.
All components have undergone structural inspection trough the FEM (Finite Element Method). The structural components surfaces are protected with three coats applied after sandblasting, while the small parts have undergone a cataphoresis corrosionproofing treatment.
The strong base, built in normalized steel work with large thickness longitudianl and transversal elements, has been further stiffened through continuous sloped structures that protect conveyor belt lower route by conveying water and eventual waste directly to ground.
All surfaces matching the upper structures have been machined through one sole positioning on the tool machine to achieve perfect units coupling.
The multi-clothe anti-slip conveyor belt is controlled by two large diameter rolls: a traction roll powered through an epicyclical gear motor, an idle roll equipped with tension devices.
Mobile beam, in heavy steel work, is designed as a sole body with a very rigid closed section. The beam slides in oil bath on hardened and ground large diameter rolls into housings, that are protected through fixed labyrinth guards, inside the bridges. Beam transversal movement is controlled by two gear motors, synchronized through a connecting shaft, which drive two helical tooth pinions tempered and ground with two racks fixed on the bridges.
Two special devices constantly lubricate with oil the contact between pinion and racks.
Two adjustable rolls units control mobile beam longitudinal position and contrast spindle vertical push working on hardened guides fixed onto bridges outer sides.This technology allows for very smooth beam transversal movement because it clears racks and pinions from vertical stress and renders pulling, instead of pressing, conveyor belt longitudinal action.

Parameters	Unit	B220MA - 06	B220MA - 08	B220MA - 12	B220MA - 14	B220MA - 16	B220MA - 18	B220MA - 20
Machine overall width	mm	3100	3100	3100	3100	3100	3100	3100
Compressed air requirement	NL/min	480	640	960	1120	1280	1440	1600
Total installed electrical power	kw	75	95	141	163	185	207	230
Number of Dressing spindles	nr	8	8	8	8	8	8	8
Conveyor system forward speed	mm/min	0,5 ÷ 3	0,5 ÷ 3	0,5 ÷ 3	0,5 ÷ 3	0,5 ÷ 3	0,5 ÷ 3	0,5 ÷ 3
Cooling water min. pressure	bar	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Polishing heads/honing units motor power	kw	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )	11 ( 5,5 x 2 )
Slabs max. processable thickness	mm	100	100	100	100	100	100	100
Slabs max. processable width	mm	2100	2100	2100	2100	2100	2100	2100
Polishing plates diameter	mm	520	520	520	520	520	520	520
Machine overall length	mm	6450	7550	9750	10850	11950	13050	14150
Machine overall height	mm	2900	2900	2900	2900	2900	2900	2900
Compressed air min. pressure	bar	6	6	6	6	6	6	6
Approx. Weight	Kg	15400	17000	21500	23500	26000	29000	32000
Cooling water requirement	L/min	180	240	360	420	480	540	600
Beam crosswise movement speed	mm/min	0 ÷ 60	0 ÷ 60	0 ÷ 60	0 ÷ 60	0 ÷ 60	0 ÷ 60	0 ÷ 60
Number of polishing heads/honing units	nr	6	8	12	14	16	18	20