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Francis Turbine Generator Coupling Shaft

Payment Type: D/P,T/T,L/C
Incoterm: FOB,CIF
Min. Order: 1
Transportation: Ocean,Land
Port: Shanghai,Ningbo

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Francis Turbine Generator Coupling Shaft

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Product Attributes Product Description Packaging & Delivery Other information

Supply Ability & Additional Information

Packaging: Crate

Transportation: Ocean,Land

Certificate: ISO9001: 2015

Port: Shanghai,Ningbo

Payment Type: D/P,T/T,L/C

Incoterm: FOB,CIF

Product Description

The Generator Coupling Shaft for Francis turbines is a key Transmission Component connecting the turbine main shaft to the generator rotor. It ensures efficient torque transfer while maintaining precise alignment between rotating systems under demanding load and speed conditions.

Designed with high torsional strength, fatigue resistance, and long-term cyclic stability, the coupling shaft is engineered with strict control of concentricity, runout tolerance, and dynamic balance, effectively minimizing vibration and reducing bearing wear throughout long-term operation.

Manufacturing Process and Quality Control

The Generator Coupling Shaft for Francis turbines is produced through a controlled, traceable process to ensure reliability and precise turbine–generator fit.

1, Material Inspection: Verify Alloy Steel composition, mechanical properties, and dimensions.

2, Cutting & Pre-Heating: Cut to length (≤5 m) and uniformly preheat for consistent structure.

3, Forging & Inspection: Shape shaft and coupling; check dimensions and surfaces.

4, Heat Treatment: Enhance strength and toughness; apply stress relief if needed.

5, Machining: Rough, semi-finish, and precision CNC Machining for critical dimensions and interfaces.

6, Testing & Inspection: Ultrasonic checks, dimensional verification, hardness tests, and balancing.

7, Marking & Packaging: Traceable marking, cleaning, corrosion protection, secure packaging, and storage.

Product Specifications

Material: ALloy Steel / Carbon Steel (e.g. 42CrMo4 / 34CrNiMo6)
Length: Up to 5 m
Diameter: 100 - 600 mm (customizable)
Weight: Up to 10 tons
Machining: Rough turned / semi-finished / fully CNC machined
Tolerance: up to ±0.01 mm
Certification: ISO 9001, customer-specific standards
Interface Accuracy: Tight concentricity control, controlled runout tolerance, and verified balance grade to minimize vibration and bearing wear

Industry Applications

The Francis Turbine Generator Coupling Shaft is designed to provide precise torque transmission between the turbine main shaft and the generator rotor. Its high torsional strength, fatigue resistance, and long-term cyclic stability make it a reliable component for demanding power generation environments. Key applications include:

Hydropower Plants

Transmission of hydraulic torque from the Francis turbine to the generator
Ensures stable operation under variable load and continuous cyclic stresses
Suitable for medium to large turbine ratings where precision alignment is critical

Industrial Generator Systems

Coupling shafts for large synchronous or induction generators
Maintains rotor alignment and minimizes vibration and bearing wear
Ideal for OEMs requiring high-quality, custom-machined torque Transmission Components

Custom Heavy-Duty Rotating Machinery

Any Industrial Equipment requiring precise torque transfer and alignment between driven shafts
Applications include large-scale pumps, compressors, and mechanical drive systems in power, mining, or metallurgical industries

Illustration for reference only. Final components are manufactured to exact project specifications for reliable operation.

This product belongs to our Hubs & Coupling Components category due to its interface-critical role.

For general shaft manufacturing capability, please refer to Machined Shafts.

Packaging & Delivery

Package Type:	Crate

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