1. What It Is

Metro railway wheels are designed for urban passenger transport systems where smooth operation, running stability, and consistent service performance are required.
These forged wheels are suitable for metro cars, light rail vehicles, and passenger rail systems operating under frequent acceleration and braking cycles.
They are developed for safe guidance, long service life, and stable contact performance in urban transit applications.

2. Where It Is Used

This type of railway wheel is widely used in:

• Metro train systems
• Urban transit vehicles
• Light rail systems
• Passenger railcars
• Suburban rail transport

3. Why Choose It

ER7 / ER8 Material

These materials offer balanced strength, fatigue resistance, and wear performance for frequent-start, frequent-stop passenger systems.

Moderate Diameter Range (700–920 mm)

This range matches many metro and passenger vehicle wheel requirements and supports stable urban rail performance.

Controlled Hardness (250–320 HB)

This hardness range improves wear resistance while maintaining ride stability and durability under repeated braking conditions.

Stable Wheel Profile

Accurate profile control helps maintain good rail contact, reduce vibration, and support smooth operation in passenger systems.

EN13262 Compliance

This standard supports quality consistency and suitability for many European-style rail applications.

4. Data Support

Key performance parameters:

• Wheel Diameter: 700–920 mm
• Flange Height: 28–35 mm
• Flange Thickness: 27–33 mm
• Rim Thickness: 60–75 mm
• Bore Diameter: 110–240 mm
• Hardness: 250–320 HB

These parameters directly affect:

• Ride stability → influenced by wheel profile and flange dimensions
• Service life → influenced by hardness and material
• Passenger comfort → influenced by rolling consistency and dimensional accuracy
• Fitment compatibility → influenced by bore diameter and diameter range
• Urban operating reliability → influenced by heat treatment and wear performance

5. Technical Specifications

6. Selection Guide

By Application

• Metro system → ER7
• Light rail → ER7
• Higher passenger load duty → ER8

By Load Capacity

• Standard urban passenger load → ER7
• Higher load or longer service cycle → ER8
• Frequent braking duty → controlled hardness recommended

By Wheel Diameter

• 700–780 mm → compact metro systems
• 780–850 mm → standard passenger transit
• 850–920 mm → larger metro or suburban rail vehicles

7. What Problem It Solves

These railway wheels help solve:

• Excessive wear from frequent braking
• Vibration and unstable rolling in passenger service
• Inconsistent performance in urban transit duty cycles
• High maintenance frequency in metro fleets

They support smoother operation, lower maintenance costs, and more reliable long-term service in passenger rail systems.

8. FAQ

Q1: What material is commonly used for metro railway wheels?
ER7 is commonly used for standard metro systems, while ER8 can be selected for higher load conditions.

Q2: Why is wheel profile accuracy important in passenger rail?
Accurate profiles improve stability, reduce vibration, and support smoother passenger operation.

Q3: Can metro railway wheels be customized?
Yes, customization is available based on transit system requirements and technical drawings.