AREMA Rail Anchors Tr37  Tr45 Tr57 | Railway Fasteners

AREMA TR37, TR45, and TR57 railroad anchors are heavy-duty fasteners designed to prevent longitudinal rail movement (creep) by gripping the rail base and bearing against ties. These designations correspond directly to specific AREMA rail profiles.

General Specifications

While precise dimensional drawings are proprietary to the AREMA Manual for Railway Engineering, general material and application specifications are consistent across manufacturers producing anchors to the AREMA standard: 

Profile-Specific Dimensions

Anchors are sized to match the base width of the specific rail weight they serve. 

Chemical Composition (Typical 60Si2MnA)

Anchors must meet strict chemical requirements to maintain elastic properties under load: 

• Carbon (C): 0.56% – 0.64%

• Manganese (Mn): 0.60% – 0.90%

• Silicon (Si): 1.60% – 2.00%

• Phosphorus/Sulfur (P/S): ≤ 0.03% 

Performance Requirements

• Slip Resistance: Anchors must provide a minimum resistance (typically 5,000 to 6,000 lbs) against longitudinal sliding on the rail.

• Retaining Force: Must maintain grip after multiple reapplications.

• Hardness: Usually heat-treated to a range of 44–48 HRC to prevent permanent deformation. 

The AREMA Standard TR37, TR45, and TR57 railroad anchors provide secure rail fastening solutions for varied track applications. Their ability to prevent longitudinal rail movement, maintain track alignment, and resist corrosion makes them essential for the safe and stable operation of freight, high-speed, and industrial rail systems. These anchors are built to withstand heavy loads, dynamic forces, and thermal expansion, ensuring the long-term performance of the rail system.

For more information or to place an order for AREMA TR37, TR45, or TR57 railroad anchors, please contact us today. We are here to provide high-quality rail fastening solutions that ensure the safety and reliability of your rail systems.