Railway Nine-Tooth Steel

I. Product Overview

Railway Nine-Tooth Steel is a key load-bearing and transmission component independently developed by Yuerui International, specifically designed for railway turnout systems, rail car transmission mechanisms and heavy-duty rail connection nodes. Characterized by its nine precision-machined tooth profiles, this product realizes stable power transmission and load bearing through the meshing fit with matching components. It is made of high-strength alloy steel with specialized heat treatment, ensuring excellent wear resistance and impact resistance. Widely applicable to high-speed railways, conventional railways and urban rail transit turnout systems, it plays a crucial role in ensuring the smooth switching of turnouts, the stable operation of rail vehicles and the overall structural reliability of rail systems. As a core component in railway transmission and connection, it effectively improves the service life of related mechanisms and reduces maintenance frequency, providing reliable support for global railway operation safety.

II. Core Specifications

III. Core Advantages

(1) Precision Tooth Profile & Stable Meshing Transmission

Adopting high-precision CNC machining technology, the nine-tooth profile is processed in one step, with strict control of tooth thickness, tooth spacing and pressure angle tolerance, ensuring tight meshing with matching components. The optimized tooth profile curve reduces the contact stress during meshing, avoids tooth surface wear caused by uneven force, and realizes smooth power transmission without jamming. The nine-tooth design balances transmission efficiency and load-bearing capacity, making it suitable for the high-frequency switching and stable operation requirements of railway turnout systems.

(2) High-Strength Material & Excellent Wear Resistance

Made of high-quality 20CrMnTiH alloy steel, the product undergoes carburizing, quenching and tempering composite heat treatment. The tooth surface forms a high-hardness wear-resistant layer, while the core maintains good toughness, achieving the combination of wear resistance and impact resistance. It can withstand long-term high-frequency dynamic load impact and friction without tooth breaking or excessive wear, and its service life is more than 50% longer than that of ordinary carbon steel tooth components. The surface anti-corrosion coating effectively resists rust and corrosion from rain, snow, dust and chemical media in the outdoor environment.

(3) Strong Load-Bearing Capacity & Structural Stability

The nine-tooth symmetric structure optimizes the force distribution, enabling the product to evenly bear the static and dynamic loads during railway operation, avoiding local stress concentration. The integral forging forming process eliminates internal defects such as pores and cracks in the material, ensuring the structural integrity and stability of the product. It passes strict load-bearing and fatigue tests, can stably operate under extreme working conditions such as heavy loads and low temperatures, and provides reliable guarantee for the safe operation of railway systems.

(4) Customizable Design & Wide Adaptability

Supporting customized production according to the specific requirements of different railway projects, including tooth profile parameters, overall dimensions and surface treatment methods, it can perfectly match the turnout systems and transmission mechanisms of high-speed railways, conventional railways and urban rail transit. The product has good interchangeability, which is convenient for on-site installation and replacement, reducing maintenance time and cost. It is compatible with various railway component standards and can be integrated into existing rail operation systems.

IV. Application Scenarios

This core component is widely used in global railway operation systems, including:

• Railway Turnout Systems: Used as the core transmission component of turnout switches, realizing the precise and smooth switching of turnouts in high-speed and conventional railways;
• Rail Car Transmission Mechanisms: Installed in the transmission system of rail maintenance vehicles and shunting locomotives, undertaking power transmission and load-bearing tasks;
• Heavy-Duty Rail Connection Nodes: Applied to the connection nodes of heavy-duty rail sections and bridge rail sections, enhancing the load-bearing capacity and stability of the connection part;
• Urban Rail Transit Turnouts: Adapted to the turnout systems of subways and light rails, meeting the requirements of frequent switching and stable operation in urban rail transit;
• Railway Renovation Projects: Used for the replacement and upgrading of old tooth components in railway turnout renovation and system upgrading projects.

V. Brand Commitment

As a global leader in railway core components, Yuerui International has always adhered to the concept of "precision manufacturing, safety first" and is committed to providing high-quality and reliable products for the global railway industry. Railway Nine-Tooth Steel is manufactured in strict accordance with international railway component standards, and each unit undergoes rigorous material testing, precision testing, load-bearing testing and fatigue testing before leaving the factory to ensure that its performance meets the actual operation needs. We provide comprehensive pre-sales services such as technical consultation and customized scheme design, as well as after-sales services including on-site installation guidance, technical training and quality tracking. Yuerui International is willing to work with global railway customers to promote the upgrading and development of railway core components and jointly safeguard the safe, efficient and stable operation of global railway systems.