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Product Description
The rotor shaft is the heart of a turbine or generator, a mission-critical component that spins at thousands of RPM under immense thermal and mechanical stress. Its integrity, balance, and precision are fundamental to the safe and efficient operation of the entire power plant. A failure here is catastrophic.
Yile Machinery is a specialized manufacturer of large, custom-engineered rotor shafts for the power generation industry. We transform high-strength forged steel into perfectly balanced, dimensionally accurate rotors ready for assembly.
The rotor shaft serves two critical functions:
Structural Backbone: It provides the central axis and physical support for turbine blades (in a turbine) or copper windings (in a generator).
Torque Transmission: It transmits the immense rotational energy from the turbine to the generator or from the generator to the grid.
Manufacturing a component that can perform both roles flawlessly for decades requires a deep understanding of materials science, metallurgy, and ultra-precision machining.
Our end-to-end manufacturing process is designed to meet the extreme demands of the power generation industry.
Advanced Material Forging: We begin with superior, vacuum-degassed forged steel alloys (e.g., CrMoV, NiCrMoV) renowned for their high-temperature strength and resistance to creep and fatigue. The forging process creates an optimal grain structure for maximum durability.
Specialized Heat Treatment: The forged shaft undergoes a critical quenching and tempering cycle. This precisely controlled thermal process develops a uniform, high-strength microstructure throughout the shaft, ensuring it can withstand operational stresses without deformation or fracture.
Ultra-Precision CNC Machining: Using large-capacity, multi-axis CNC lathes and milling centers, we machine the complex profile of the rotor. This includes turning bearing journals to a mirror finish, milling blade root fixings (fir-tree slots), and drilling a central inspection bore.
Critical Dynamic Balancing & Testing: After machining, every rotor shaft is dynamically balanced to extremely tight ISO standards. This process corrects the slightest mass imbalance, which is essential to prevent destructive vibrations at high rotational speeds. We confirm component integrity using non-destructive testing (NDT) methods like ultrasonic and magnetic particle inspection.
We are an OEM and MRO partner for the manufacturing and refurbishment of:
Steam Turbine Rotors (High, Intermediate, and Low-Pressure sections)
Gas Turbine Rotors
Generator Rotors (Alternator Shafts)
Large Industrial Compressor and Expander Shafts
Discuss Your Rotor Shaft Project with Our Experts
Partner with a specialist in critical rotating equipment. Submit your technical drawings, material specifications, and testing requirements to receive a comprehensive proposal from our engineering team.
