Axial and radial turbines driven by gas; radial compressors for air as a working fluid; turbochargers for internal combustion engines, namely, diesel, gas, and spark ignition turbochargers used in marine, stationary, industrial, power generation and residual oil burning compression ignition or non-heavy fuel spark or compression ignition engines; parts and fittings of turbochargers, namely, turbines, shafts, compressors, bearings, namely, ball bearings and rolling contact bearings, integrated oil channels for lubrication and cooling of bearings, gas casings to direct the exhaust gas to and from the turbine, air casings to direct the air to and from the compressor, air filter silencers for filtration of air before a turbocharger compressor and for noise attenuation, mainly used for marine engines, pumps, namely, oil and lubrication pumps for use in turbochargers, gears for transmission and drive of machines, electrical generators for power control and generation, and couplings for transmission and drive of machines