What does 136 lb rail mean?
Apr 09, 2026
What does 136 lb rail mean?
In the railroad industry, 136 lb rail refers to the weight of the rail per linear yard. Specifically, it means that a section of the rail measuring 3 feet (1 yard) weighs 136 pounds.This is a standard measurement used primarily in North America (AREMA standards) to categorize rail profiles. Here is a breakdown of what this specific weight indicates:
1. Technical Specification
- Weight: 136 lbs per yard (approx. 67.46 kg per meter).
- Profile: It is a heavy-duty rail profile designed to handle significant stress and weight.
- Dimensions: While "136 lb" refers to the weight, it also implies a specific set of dimensions for the head width, web thickness, and base width to ensure compatibility with fastening systems like tie plates and clips.
2. Common Usage
136 lb rail is one of the most common standards for Class I railroads (major freight lines). Because of its strength and durability, it is typically used for:
- Mainline Tracks: High-traffic routes that carry heavy freight loads.
- Heavy Axle Loads: Tracks designed to support modern, high-capacity freight cars.
- High-Speed Sections: The added mass provides greater stability and resistance to deformation under high speeds.
136RE Rail Dimensions & Section Details
The 136RE (also known as TR68 or 136-lb AREMA) rail is a heavy-duty steel profile designed for high-axle loads and mainline tracks, weighing approximately 67.50 kg/m (136lb/yb). It features a 185.74 mm height, 152.4 mm base width, 74.61 mm head width, and 17.46 mm web thickness, adhering to AREMA specifications.
| Profile | Standard | Dimensions mm | Section S | Mass m | ||||
|---|---|---|---|---|---|---|---|---|
| H | B | C | D | E | cm² | kg/m | ||
| American standard | ||||||||
| 136RE (TR68) | AREMA | 185,70 | 152,40 | 74,60 | 49,20 | 17,50 | 85,90 | 67,50 |
136 lb Rail vs Other Rail Types
136 lb rail (136RE/TR68) is a heavy-duty, American Railway Engineering and Maintenance-of-Way Association (AREMA) standard rail weighing 67.41 kg, designed for high-axle loads, heavy freight, and industrial crane applications. Compared to lighter rails (e.g., 115RE) or metric counterparts (e.g., 60kg/m), it offers superior structural strength, durability, and better resistance to fatigue.
136 lb Rail vs. Other Rail Types
- 115RE Rail: Weighs ~115 lb/yd (56.9 kg/m). Suitable for medium-load railways, whereas 136RE is used for higher-intensity freight.
- 132RE/133RE Rail: Weighs ~132–133 lb/yd (65–66 kg/m). Close to 136RE in application and often interchangeable, but slightly lighter.
- 141RE Rail: Heavier than 136RE (~141 lb/yd or 69.9 kg/m), designed for even heavier loads.
- 60 kg/m (UIC60/CN60): Similar in strength to 136RE but metric standard; 60 kg/m is widely used in high-speed rail worldwide, whereas 136RE is standard for heavy haul in the Americas.
136RE is highly specialized for maximum load-bearing, making it more robust but potentially less cost-effective for lighter, lower-speed applications compared to 115RE or 100RE options.
FAQ
1. What does 136 lb rail mean in simple terms?
The term 136 lb rail means the rail weighs 136 pounds per yard. It is a standard way to classify rail size and strength in AREMA systems.This weight indicates that 136RE rail is a heavy rail suitable for demanding railway applications.
2. What is the weight of 136RE rail per meter?
The standard 136RE rail weight is about 67.5 kg per meter. This is converted from 136 pounds per yard.This weight makes rail 136 lbs suitable for heavy-haul and high-traffic railway systems.
3. What are the standard 136RE rail dimensions?
Typical 136RE rail dimensions include height 185.7 mm, head width 74.6 mm, and base width 152.4 mm.These dimensions define the 136RE rail profile and ensure compatibility with railway systems.
4. Where is 136 lb rail used?
136 pound rail is widely used in heavy-haul freight lines, mainline railways, and high-traffic corridors.Its strong 136RE rail section makes it suitable for demanding operating conditions.
5. What is the difference between 136RE rail and lighter rails?
The main difference is weight and strength. 136 lb rail is heavier and stronger, while lighter rails are used for less demanding applications.This makes AREMA 136RE rail more suitable for long-term and heavy-load use.
GNEE RAIL focuses on delivering stable 136RE rail specification, with strict control over 136RE rail profile, dimensional accuracy, and mechanical performance. Flexible processing options such as cutting, drilling, and matching fastening systems help adapt the rail to different applications.
For heavy-haul and high-traffic railway systems, selecting the right 136 lb rail ensures better stability, longer service life, and improved operational efficiency. GNEE RAIL supports optimized rail solutions tailored to real working conditions, helping achieve reliable and cost-effective railway infrastructure.
