AREMA Standard Tr37 Tr45 Tr57 Railroad Anchors

AREMA standard rail anchors for Tr37, Tr45, and Tr57 (also known as 115RE) are critical fasteners designed to prevent longitudinal rail movement, or "creep," caused by temperature changes, grades, and train braking. These anchors attach to the rail base and bear against the sleepers (ties) to transmit forces and maintain track stability. 

Technical Specifications

• Standard Compliance: These anchors are manufactured to meet AREMA Manual Chapter 5, Part 7 specifications for drive-on or spring-type anchors.

• Materials: Typically made from high-quality spring steel or alloy steel, such as 60Si2MnA or 1060 steel, heat-treated for elasticity and durability.

• Surface Treatment: Options include plain (oiled), color painting, zinc painting, or hot-dip galvanizing (HDG) to resist corrosion. 

Anchor Types

• Drive-on Rail Anchors: One-piece construction driven onto the rail base using a standard spike maul.

• Spring-Type Rail Anchors: Includes designs like the Unit Spring and Channeloc anchors, which offer high holding power through spring tension.

• Heavy-Duty Designs: Available in single or double-shoulder configurations to provide a more secure grip in high-stress areas. 

Specifications of AREMA TR37, TR45, and TR57 Railroad Anchors

AREMA TR37, TR45, and TR57 rail anchors are single-piece, spring-steel anti-creeper devices designed to fit specific American Railway Engineering and Maintenance-of-Way Association (AREMA) standard rail weights and base widths. 

The "TR" designations correspond to the supported rail profiles: 

• TR37: Corresponds to 74 lb/yd rail (approx. 37 kg/m, less common).

• TR45: Corresponds to 90ARA-A or 90 lb/yd rail.

• TR57: Corresponds to 115RE or 115 lb/yd rail.