Gang Saw is An Excellent Block Cutting Machine

Gang saw is one of the many widely used stone block cutting machines. It’s composed of saw frame, link rods, vertical pillars and straight band saws. The straight band saws are installed in the saw frame. The link rods motivate the saw frame and straight band saws into reciprocation movement so as to cut stone. Meanwhile, the saw frame vertical transmission mechanism works to feeding the band saws downward on stone block continuously. In the early days, gang saw cuts stone block by steel bands and steel grits. Today the gang saw is highly developed with high level automation and big cutting capacity.

In 1970, Italy was the first country to launch large gang saw machine cutting stone by straight band saws welded with diamond segment. It was able to cut maximum size marble block 3.5-meter long and 2-meter wide. That means that the gang saw can cut 100pcs slab of 2cm thick at a time, about 20% higher capacity than the old style gang saw machine. Currently, the gang saw block saw machine cutting by straight band saws welded with diamond segment is merely used in marble production. It is not qualified to cut harder stones like granite. Because the welded diamond segment is easy to break off from the straight band saw in cutting granite. That’s why granite block is usually cut by steel band saws and steel grits.

Most of the gang saw machines that used in Chinese stone plants are imported from Italy. Even though that some China stone machine manufacturing companies try to learn from Italian technology and produce their own gang saw machine since 2000, most of them still not master the core technology. Their gang saw is not as well as the Italian gang saw in cutting efficiency, cutting cost control and mean time between failures. For China gang saws, problems mainly occurred in the saw frame guide system and band saw hydraulic tensioning system. Italian gang saw are two link rods design while most of China gang saw is single link rod design.