Holset 3527573 Turbocharger Turbine Shaft Rotor Assembly

The Holset 3527573 turbine shaft rotor assembly is a critical rotating component designed for HX80/HX82 frame turbochargers mounted on Cummins QSK45 series diesel engines. Manufactured from high-nickel superalloy (Inconel 713C or equivalent) to withstand extreme exhaust gas temperatures exceeding 950°C and rotational speeds above 100,000 RPM. This rotor assembly integrates the turbine wheel and shaft into a single balanced unit. It undergoes multi-plane high-speed balancing (VSR) to ISO 1940/1 G2.5 or better, ensuring minimal vibration and maximum bearing life in severe duty cycles. The shaft features precision ground journals for hydrodynamic bearings and a threaded compressor wheel interface. Primary OEM cross-reference: Cummins 3527573. Direct replacement for turbocharger center housing rotating assemblies (CHRA) used in heavy mining haul trucks, industrial power generation, and marine propulsion packages utilizing the QSK45 platform. Installation requires professional turbocharger rebuild equipment and strict adherence to axial/radial clearance specifications.