High-Precision End Teeth Solutions for Railway Transmission and Rotating Systems

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

Railway End Teeth are engineered to provide high positioning accuracy, self-centering capability, high torque transmission, and excellent resistance to vibration and impact loads.

OBT's end teeth products are widely used in high-speed trains, railway locomotives, metro systems, electric traction systems, railway gearboxes, and heavy-duty transportation equipment.

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 railway rotating components, including:

· Railway drive shafts

· Wheelset components

· Gear transmission parts

· Traction system components

· Precision coupling structures

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 accurate positioning and excellent repeatability for railway rotating components. The precision-ground face teeth ensure stable connection and efficient torque transmission in high-load transmission systems.

Hirth Couplings

Hirth coupling designs offer high rigidity and compact structural performance, making them suitable for railway systems requiring precise alignment and reliable mechanical locking.

Curved End Teeth

The curved tooth profile enables full surface contact between mating components, improving load distribution and reducing stress concentration.

Compared with conventional straight teeth, curved end teeth provide:

· Higher load-carrying capability

· Improved vibration resistance

· Reduced tooth wear

· Better fatigue performance

Customized Railway End Teeth Solutions

OBT can design and manufacture customized end teeth according to railway equipment requirements:

· Curved end teeth

· Sector end teeth

· Straight end teeth

· Special indexing and positioning structures

Precision Performance

OBT Railway End Teeth are manufactured to meet high-performance transmission requirements:

· Repeat positioning accuracy: ±1"

· Indexing positioning accuracy: ±2"

· Tooth contact area: ≥90%

· Tooth contact ratio: 100%

Precision grinding and inspection ensure:

· Accurate component alignment

· Excellent interchangeability

· Uniform load distribution

· Long-term operational reliability

Product Advantages

High Torque Transmission for Railway Applications

Railway traction systems require components capable of transmitting high torque under continuous loading conditions. Precision-ground end teeth provide a large contact area, improving tooth strength and enabling reliable power transmission.

Superior Vibration and Impact Resistance

Railway equipment operates under complex mechanical conditions involving vibration, shock loads, and frequent acceleration and braking.

The optimized end teeth structure helps reduce:

· Local stress concentration

· Contact fatigue

· Mechanical deformation

· Vibration-induced wear

ensuring stable operation throughout the service life of railway systems.

High Positioning Accuracy & Self-Centering Capability

The precision face-tooth design provides automatic centering after engagement, improving:

· Shaft alignment accuracy

· Rotational balance

· Transmission efficiency

· Assembly reliability

Long Service Life Under Continuous Operation

Railway equipment often operates thousands of hours annually under demanding conditions. The high-strength tooth structure and optimized contact design provide:

· Excellent wear resistance

· Stable performance under repeated cycles

· Reduced maintenance requirements

· Extended component life

Compact Structural Design

End teeth technology integrates positioning and torque transmission functions, enabling:

· Smaller transmission structures

· Reduced weight

· Simplified assembly

· Easier maintenance

Applications

Railway Transportation Systems

· High-speed train drive systems

· Railway locomotive transmission systems

· Metro and urban rail vehicles

· Electric traction systems

Railway Mechanical Components

· Wheelset assemblies

· Gearbox transmission systems

· Drive shafts

· Coupling mechanisms

· High-speed rotating components

Heavy-Duty Transportation Equipment

· Railway maintenance machinery

· Industrial rail vehicles

· Heavy-load transportation systems

Why Choose OBT Railway 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 torque transmission and vibration resistance capability
✓ Reliable performance under continuous operating conditions
✓ Customized solutions for railway transmission and rotating systems

OBT provides precision-engineered Railway End Teeth solutions to improve the reliability, efficiency, and service life of advanced railway transmission systems.