Cummins 3525687 Turbocharger Turbine Shaft

The Cummins 3525687 turbine shaft is a precision-machined rotor component designed for H1E, HX40, and HX40W series turbochargers. It integrates the turbine wheel and shaft into a single high-strength assembly capable of sustained rotation speeds between 120,000 and 160,000 RPM under extreme exhaust gas temperatures. Manufactured from high-nickel superalloy (typically Inconel 713C or equivalent) to withstand thermal cycling and centrifugal stress. The shaft features precision ground bearing journals and a 10-blade turbine wheel configuration with 75.00 mm inducer diameter and 62.00 mm exducer diameter. Dynamic balancing is performed to ISO 1940 G1.0 or tighter tolerance to ensure vibration-free operation at maximum rotational velocity. This component serves as the core rotating element within the turbocharger center housing rotating assembly (CHRA). Direct OEM replacement for Cummins part number 3525687. Compatible with aftermarket designations including gyturbo H6275A. Installation requires professional CHRA reassembly with new bearings, seals, and thrust components per Cummins service specifications.