... application and OEM service offered.Product features of BC series heavy-duty gearboxBC series heavy-duty industrial gearbox is a right angle ... fields, such as mine, petrochemical, electric power, metallurgy etc.BC series heavy-duty industrial gearboxTransmission stageBC1 (ratio from 1.25~5 ... .6)BC2 (ratio from 6.3~28)BC3 (ratio from 22.4~112)BC4 (ratio from 100~450) Efficiency92%~98% (depends ...