Drilling machine SBSH-250MNA-32KP

Designed for drilling of explosive boreholes Ø 250-311mm in rocks with strength up to 20 units on the scale of Prof. Protodyakonov. Protodyakonov.

The frame-platform design of the machine significantly increases its reliability when working in especially difficult mining and geological conditions. The compressor unit with a capacity of 50 m3/min ensures efficient operation of drilling tools and cleaning of boreholes from drilling fines. Drilling of boreholes Ø 311 mm is more efficient compared to Ø 250 mm.

The volume of rock mass yield per 1 metre of drilling is increased. 1 metre of drilling, the cost of drilling tools is reduced, the cost of rock mass is reduced. Drilling machines of heavy class have passed initial tests at iron ore enterprises during drilling of boreholes diameter of 290 mm, then the diameter was increased to 311 mm.

The test results showed significant efficiency and advantages achieved by increasing the productivity of drilling operations, reducing the energy intensity of ore extraction and reducing up to 20 per cent of the yield of oversized of oversized rock mass along the c...