Innovative way of production and assembly of the roller bits

Results of researches and experiments on production and assembly of the roller bit with multiply reduced admissions on the key output parameters - a radial, face beating and constancy of the size on diameter of a chisel are given. In spite of the fact that the size of these admissions regulated by the International API standard is estimated in millimeter shares, it has huge impact on drilling indicators - an average driving, mechanical speed, driving meter cost when drilling millions of meters of wells. Over a problem of reduction of the sizes of the specified admissions years all leading drill bit firms of the world work hard. The it is less these than the admission, the competitiveness and prestige of sales is higher, the export prices of chisels are higher.