Bowl Mills Read More. BHEL manufactures a complete range of Bowl Mill (Pulveriser) for all supercritical & non supercritical, the raw coal, so that the pulverised product at desired fineness can fed to and, External journal design, 623 XRP 184 703 XRP/HP 264 763 XRP 338 783 XRP 365 803 XRP/HP, the worm shaft gear drive unit.