High-Precision End Teeth Solutions for Gas Turbine Rotor Assemblies

With advanced end teeth design technology and full-scale industrial manufacturing capabilities, OBT provides precision solutions including Curvic Couplings, Hirth Couplings, curved end teeth, sector end teeth, and straight end teeth.

Gas Turbine Rotor End Teeth are designed to provide accurate positioning, automatic centering, high torque transmission, and superior structural rigidity for critical rotating components operating under extreme conditions.

OBT's end teeth solutions are widely applied in industrial gas turbines, aero-derived turbines, power generation systems, aerospace engines, compressors, and other high-performance rotating machinery.

Manufacturing Capabilities

OBT is equipped with advanced precision machining and grinding equipment, including:

· CNC internal and external cylindrical grinders

· Precision surface grinders

· CNC vertical grinders

· CNC contour grinders

These capabilities enable the manufacturing of complex high-precision rotating components, including:

· Gas turbine rotor discs

· Turbine shafts

· Compressor rotors

· Multi-stage rotor assemblies

· High-speed rotating components

Machining Capacity

· Maximum end teeth machining diameter: Ø3400 mm

· Maximum machining length: 6000 mm

· Maximum vertical grinding swing diameter: 2500 mm

· Maximum contour grinding swing diameter: 1200 mm

· Machining range: Ø30 mm – Ø2500 mm

· Geometric accuracy: ≤0.002 mm

Advanced End Teeth Manufacturing Capability

Curvic Couplings

Curvic couplings provide high-precision radial positioning and excellent repeatability for gas turbine rotor components. The precision-ground face teeth ensure accurate alignment and reliable transmission of high rotational torque.

Hirth Couplings

Hirth couplings offer exceptional rigidity and compact structural design, providing secure mechanical connection for turbine rotor assemblies operating under high-speed and high-load conditions.

Curved End Teeth

The curved tooth profile creates full-area surface contact between mating components, improving load distribution and reducing localized stress compared with conventional straight teeth.

Customized Rotor End Teeth Solutions

OBT develops customized end teeth structures according to turbine rotor design requirements, including:

· Curved end teeth

· Sector end teeth

· Straight end teeth

· Custom indexing and positioning designs

Precision Performance

OBT Gas Turbine Rotor End Teeth are manufactured according to demanding precision requirements:

· Repeat positioning accuracy: ±1"

· Indexing positioning accuracy: ±2"

· Tooth contact area: ≥90%

· Tooth contact ratio: 100%

Through precision grinding, dimensional control, and advanced inspection processes, OBT ensures:

· High assembly accuracy

· Excellent interchangeability

· Uniform load distribution

· Long-term operational reliability

High Torque Transmission Under Extreme Loads

Gas turbine rotors operate under extremely high rotational speeds and continuous torque loads. Precision-ground end teeth provide a large contact area, increasing tooth surface strength and root strength to ensure reliable torque transmission.

Accurate Rotor Alignment & Self-Centering

The unique face-tooth structure enables automatic centering after engagement, ensuring precise alignment between turbine rotor components and reducing assembly deviation.

This improves:

· Rotor concentricity

· Dynamic balance performance

· Operating stability

· Maintenance efficiency

Superior High-Speed Rotating Performance

During operation, gas turbine rotors experience significant centrifugal forces and thermal expansion. The optimized curved tooth geometry provides:

· Uniform stress distribution

· High resistance to deformation

· Reduced vibration

· Improved fatigue performance

Unlike conventional straight teeth, curved end teeth eliminate concentrated point or line contact and distribute loads across the entire curved surface, significantly improving durability under high-speed operation.

Excellent Thermal Stability

Gas turbines operate in demanding environments with high temperature and thermal cycling conditions. The optimized end teeth structure provides uniform heat transfer characteristics, improving:

· Dimensional stability

· Service life

· Operational reliability

Applications

Industrial Gas Turbine Systems

· Gas turbine rotor assemblies

· Turbine shaft connections

· Compressor-turbine rotor coupling systems

· Power generation equipment

· Combined cycle power plants

Aero-Derivative Gas Turbines

· Aero engine-derived turbine rotors

· High-speed turbine assemblies

· Compact power generation systems

Heavy-Duty Rotating Equipment

· Centrifugal compressors

· Large-scale rotating machinery

· Energy equipment

· Marine propulsion systems

Why Choose OBT Gas Turbine Rotor End Teeth?

✓ Professional design and manufacturing capability for Curvic and Hirth coupling systems
✓ Large-scale end teeth machining capability up to Ø3400 mm diameter and 6000 mm length
✓ Ultra-high precision grinding accuracy up to 0.002 mm
✓ High torque transmission and automatic centering capability
✓ Excellent performance under high-speed and high-temperature conditions
✓ Customized solutions for gas turbine rotor assemblies

OBT provides precision-engineered Gas Turbine Rotor End Teeth solutions to enhance the reliability, efficiency, and service life of advanced turbine rotor systems.