High-Precision End Teeth Solutions for Nuclear Power Rotor Systems

With advanced end teeth design capability and industrial-scale manufacturing experience, OBT provides customized solutions including Curvic Couplings, Hirth Couplings, curved end teeth, sector end teeth, and straight end teeth.

Nuclear Power Rotor End Teeth are engineered to provide high-accuracy positioning, self-centering capability, high torque transmission, and exceptional structural stability for critical rotating components operating under demanding nuclear power conditions.

OBT's precision end teeth solutions are widely applied in nuclear power plants, steam turbine systems, nuclear industry pumps, large generators, and high-reliability rotating machinery.

Manufacturing Capabilities

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

· CNC internal and external cylindrical grinders

· Precision surface grinders

· CNC vertical grinders

· CNC contour grinders

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

· Nuclear turbine rotor components

· Generator rotor assemblies

· Pump rotor shafts

· Large-scale rotating structures

· Precision coupling 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

End Teeth Design & Manufacturing Capability

Curvic Couplings

Curvic coupling technology provides extremely accurate positioning and repeatability between nuclear power rotor components. The precision-ground face teeth ensure stable alignment and reliable torque transmission during long-term operation.

Hirth Couplings

Hirth coupling designs provide high rigidity and secure mechanical locking, making them suitable for large rotating assemblies requiring precise alignment and resistance to heavy mechanical loads.

Curved End Teeth

The curved tooth structure creates full-surface contact between mating components, improving load distribution and reducing local stress concentration.

Compared with traditional straight teeth, curved end teeth provide better resistance against:

· Tooth edge damage

· Uneven loading

· Vibration caused by poor contact

· Fatigue wear during long-term operation

Customized Nuclear Rotor End Teeth Solutions

OBT provides customized end teeth designs according to different nuclear equipment requirements:

· Curved end teeth

· Sector end teeth

· Straight end teeth

· Special indexing and positioning structures

Precision Performance

OBT Nuclear Power Rotor End Teeth are manufactured to meet strict precision requirements:

· Repeat positioning accuracy: ±1"

· Indexing positioning accuracy: ±2"

· Tooth contact area: ≥90%

· Tooth contact ratio: 100%

Advanced grinding and inspection processes ensure:

· Accurate rotor alignment

· Excellent interchangeability

· Uniform load distribution

· Long service life

Product Advantages

Exceptional Reliability for Long-Term Operation

Nuclear power equipment requires extremely high reliability and continuous operation capability. Precision-ground end teeth provide stable mechanical connection and maintain consistent performance throughout extended service periods.

High Torque Transmission Capability

The large tooth engagement area improves tooth surface strength and root strength, enabling reliable transmission of high torque loads in large rotating systems.

The optimized tooth geometry reduces stress concentration and improves fatigue resistance under repeated operating cycles.

Precision Alignment & Self-Centering Performance

The end teeth structure provides automatic centering after engagement, ensuring accurate positioning between rotor components and reducing:

· Assembly deviation

· Rotor misalignment

· Vibration levels

· Mechanical wear

Excellent Thermal & Structural Stability

Nuclear power systems experience long-term thermal cycles and demanding operating environments. The optimized end teeth design provides:

· Stable dimensional accuracy

· Uniform load distribution

· Improved resistance to thermal deformation

· Enhanced service reliability

Compact and Efficient Rotor Design

End teeth technology combines positioning and torque transmission functions, allowing engineers to achieve:

· Simplified rotor structures

· Reduced component weight

· Easier installation and maintenance

· Improved system efficiency

Applications

Nuclear Power Generation Systems

· Nuclear steam turbine rotor assemblies

· Generator rotor connections

· Turbine shaft couplings

· Nuclear power rotating equipment

Nuclear Industry Equipment

· Reactor coolant pumps

· Nuclear circulation pumps

· Large centrifugal pumps

· High-reliability rotating machinery

Energy & Heavy-Duty Applications

· Steam turbines

· Large power generation equipment

· Industrial rotating systems

· Precision mechanical assemblies

Why Choose OBT Nuclear Power Rotor End Teeth?

✓ Professional design and manufacturing capability for Curvic and Hirth coupling systems
✓ Large-scale machining capability up to Ø3400 mm diameter and 6000 mm length
✓ Ultra-high precision grinding accuracy up to 0.002 mm
✓ High reliability for long-term continuous operation
✓ Excellent positioning accuracy and torque transmission capability
✓ Customized solutions for nuclear power and heavy-duty rotating equipment

OBT delivers precision-engineered Nuclear Power Rotor End Teeth solutions for safe, reliable, and long-life operation of critical rotating systems.