The Core Drilling Machine is Diesel Engine (Greaves Ltd.) operated powered road building drill has been designed specifically for the purpose of drilling test cores from or holes in Roads, Airport Runways, Bridges etc. The Machine comprises of two vertical support columns, which carry the drill head/ engine assembly accurately with the help of screwed spindle. The 5 Hp diesel engines with pulley mechanism works with minimum vibrations. The double precision bit advances with screwed spindle, which provides a constant, accurate drill pressure, minimum core chipping & long bit life. The complete assembly is supplied on a rigid metal base with levelling facility and is suitable for vertically down coring applications only. For asphalt pavement/Concrete Road. Engine driven Air cooled. Cut up to 100 mm dia specimen with impregnated diamond core bit. Extension core barrel and adaptor. Water tank also supplied with machine & spray arrangement for cooling the diamond bit.