Kingrail Railway Suspension Spring Assembly

Kingrail railway suspension spring assemblies consist of matched inner and outer coil springs designed for railway bogie systems. The assembly is used to support vehicle weight, absorb vibration, reduce impact loads, and maintain stable contact between the wheel and rail during operation.

A properly designed suspension spring assembly is essential for rolling stock safety, ride comfort, and long-term bogie performance. The inner and outer springs work together to provide balanced load capacity, controlled deflection, and improved resistance to fatigue under repeated dynamic loads.

Kingrail supplies customized railway suspension spring assemblies for locomotives, freight wagons, passenger coaches, metro vehicles, and industrial rail vehicles. Production can be arranged according to customer drawings, samples, material standards, load requirements, and installation dimensions.

Main Benefits:

• Complete matched inner and outer spring solution
• Stable suspension performance under dynamic railway loads
• Improved shock absorption and vibration control
• High fatigue strength for long service life
• Good dimensional accuracy for smooth installation
• Custom manufacturing for different bogie types
• Surface protection available for anti-rust performance

Manufacturing Process:

• Raw material selection
• Hot coiling or cold coiling according to spring size
• Heat treatment and tempering
• End grinding and forming
• Shot peening treatment
• Surface coating or painting
• Final dimensional and mechanical inspection

Available Quality Documents:

• Material certificate
• Chemical composition report
• Mechanical property report
• Hardness test report
• Load-deflection test report
• Dimensional inspection report
• Surface inspection report

Typical Applications:

• Y25 bogie suspension systems
• Freight car bogies
• Passenger coach bogies
• Locomotive bogies
• Metro and light rail vehicles
• Railway spare parts replacement projects

Kingrail is committed to supplying reliable railway suspension spring assemblies with customized production, strict quality control, and professional technical support for international railway customers.

Welcome to the Kingrail website. We're glad you stopped by and trust you will have a happy tour.

Kingrail is an international company offers diversified range of high-tech products and services and operates globally.

Core business is identified with three divisions:

1. High-end railway components – wheels, axles and wheelsets for high-speed applications, locomotives, passenger trains, trams and underground trains., rail road cars, light rail, street car, ballast vehicles, etc

2. Railway track materials: Tie plates, fishplates, clips, screw spikes, steel rails, etc

3. Forging and casting to drawings, for various applications such as power generation, oil and gas, offshore platforms, cement works, industrial plants, iron and steel production plants or shipbuilding.

Whether you need components or integrated systems, global tracking technology or performance analytics,Kingrail is always here at service for you!

Since 2002, we've been committed to having the world's highest standards in railroad wheel sets. But we don't set the standards; our customers do.

The hard and smart-working employees of Kingrail are dedicated to putting customers first. Over 200,000 squares of manufacturing space. We're armed with modern equipment, progressive production methods, and the confidence that comes with years of experience. We can take on any job. No matter what it is.

With roots deeply embedded in the railroad industry, we've grown to be a world-class supplier of customer satisfaction. From your first contact with us to the delivery of the product, we strive to make it easy for you. Kingrail staff are happy and pride working here because they love and happy for the job, care and happy for all the job they do.

So feel free to put us to the test – with something easy, or better yet, with something impossible. We're ready to show you what we can do.

Maanshan Kingrail Technology Co.,Ltd. is pleased to introduce ourselves as one of the leading manufacturer, stockist and supplies of Railcar spares and Railway Track Materials, Railway equipment, forging and casting metal products!

Equipped with forging lines:3T electro-hydraulic Hammer,2500T Hot Die press,1600T Hot Die press,400T Double plate Friction press,300T Double plate Friction press, Kingrail also equipped with fully machining and inspection equipment, Main machining equipments:CNC Lathes,Painting line,Continuous Heat-treatment Line,well type Furnace,Cutting machine,Robots, Main testing equipments;OES Metals Analyzer,CMM,Universal hydrankic testing machine.

Invest about 8% of the sales volume to be the R&D expenses, Kingrail introduce the world's leading technology combined with international high-tech talent to ensure the stable development of the company,and maintain long-term competitive advantage.

Kingrail have exported products over 50 countries such as US, Canda, UK, South Africa, Kenya, India, etc. Competitve quality and service are spoken highly by worldwide customers!

Kingrail made strict rules on all products, customer service is customer core value! 

Our vision:

* To be best supplier with world-Leading Capacities!

* 100% customer satisfication!

We are not the best now, but we strive to be better and better!