AREMA Railroad Joint Bars for Rail 115RE 136RE

Railroad joint bars, also known as fishplates, are essential components in rail track construction and maintenance. They provide the mechanical connection between two rail ends, ensuring alignment, load transfer, and structural integrity of the railway. Among the globally recognized standards, the AREMA specifies precise dimensions and tolerances for joint bars to guarantee compatibility and safety. 

AREMA standard joint bars for 115RE and 136RE rail sections differ primarily in their physical dimensions to accommodate the different heights and weights of the rails. While both typically use standard lengths of 24" or 36", their hole heights (elevations) and bolt sizes vary.

The Role of AREMA Joint Bars

AREMA joint bars are designed to:

• Ensure Secure Rail Alignment: Joint bars maintain precise alignment at rail joints, minimizing lateral and vertical movement. This is crucial to prevent track gauge variation and rail misalignment that could compromise train safety.

• Transfer Load Efficiently: Properly fitted joint bars distribute wheel loads from one rail to another, reducing stress concentration at rail ends and extending rail life.

• Facilitate Maintenance and Rail Replacement: Joint bars allow for relatively easy rail replacement without the need to disrupt the entire track structure.

Design Specifications for AREMA Joint Bars

• Material: Typically forged from high-strength carbon steel, providing durability and resistance to fatigue.

• Standard Dimensions: AREMA provides standardized lengths, thicknesses, bolt hole spacing, and tapering to match specific rail profiles like 115RE and 136RE.

• Bolt Compatibility: Designed for high-strength bolts, ensuring a secure clamping force while allowing for thermal expansion and contraction.

• Tolerance and Quality: AREMA joint bars are manufactured within precise tolerances to ensure proper fit, prevent gap formation, and reduce wear.

• Differences Between 115RE and 136RE Joint Bars

• Length and Thickness: Joint bars for 136RE rails are generally longer and thicker to match the larger rail head and web dimensions, providing sufficient contact area for load transfer.

• Bolt Pattern: The bolt spacing and number of bolts can differ to align with the specific web and base width of the rail.

• Load Capacity: 136RE joint bars must support higher axle loads, so they are designed with higher structural strength.

Applications

AREMA joint bars for 115RE and 136RE rails are used in:

• Mainline freight and passenger tracks

• Rail yards and sidings

• Bridges and elevated track sections

• High-speed rail corridors where load transfer and alignment precision are critical

• AREMA railroad joint bars for 115RE and 136RE rails are vital components that ensure safety, durability, and operational efficiency on North American railroads. Selecting high-quality joint bars that meet AREMA standards is essential for railway operators aiming to maintain smooth, reliable, and long-lasting track infrastructure. Proper installation, regular inspection, and timely maintenance further enhance the performance and longevity of both the rails and the joint bars.