The drill can be applied in mining – in gaseous-and-dusty mines; in rock and construction industry. It’s applicable at any places if there is compressed air and the drill is allowed to be used. The drill is comprised of a motor, a reductor, a starting device, rotation control. A blocking device provides safety during tools change. PR-8 hand drill operates with the automatic oil-can M-1 which provides all-time lubrication of interacting surfaces during the shift as well as a long-term and stable performance of the drill. The length of the hose linking the oil-can with the drill must be of 3-5 m. The oil-can consists of two fittings (dia. 25 mm) for the hose, mechanical purification filter, a ball valve. Oil supply is adjusted smoothly by turning the screw under the oil-can plug. Max oil consumption is 35 g/min when the screw makes 2,5-3,0 pivot turns starting from ‘locked’ position. (At ambient temperature of 200 C, compressed air pressure of 0,4 MPa, I30A type oil). Specifications: Pneumatic hand drill PR-8 Name Value Pressure, Mpa 0.4 Engine power, kW, min 2.5 Shaft rotating speed, min-1±15% 1000 Air consumption, m3/min, max 4 Blast-hole diameter, mm up to 43 Dimensions, mm 700x130x200 Weight, kg, max 8
Automatic oil-can М-1 Name Value Working pressure, МPa 0,4 Rated air consumption, m³/min, max 4,5 Oil can capacity, litres 1,5 Weight, kg, max 10
Hand drills PR-8 were tested at Chertinskaya mine (2005 year), Polysaevskaya mine. The product is certified in GOST R system. Trade mark and certificate
Sanitary and epidemiological certificate
License issued by Federal Office of Ecological, Technological and Atomic control