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GDGL clamps, primarily known as GDGL-2 double-hole rail clamps, are specialized two-hole pressure plates used to secure heavy-duty steel rails to concrete crane beams or industrial trestle bridges. They are critical for ensuring track stability by providing powerful clamping force that prevents both longitudinal creep and lateral displacement.
Key Specifications & Performance
These clamps are designed to meet rigorous industrial standards, such as the 04G325 national standard or 05G525 national standard,etc.
Material: Typically manufactured from high-strength Q235B carbon steel.
Clamping Force: Capable of generating a maximum clamping force of ≥60kN.
Durability: Rated for a fatigue life of over 2 million cycles under heavy loads.
Operating Range: Built to withstand temperatures from -40℃ to +80℃.
Components of a GDGL Assembly
A complete set of GDGL rail clamps includes more than just the metal plate:
Double-Hole Pressure Plate: The main body featuring elliptical long holes for lateral adjustment during installation.
Elastic Composite Rubber Pad: Placed between the track and the beam to increase friction, reduce noise, and absorb vibrations.
Wedge-Shaped & M-Shaped Backing Plates: Used to fine-tune alignment and prevent shifting after tightening.
Fasteners: High-grade hexagon bolts, nuts, and spring washers (complying with GB/T standards).
Common Models by Rail Weight
GDGL clamps are selected based on the specific rail profile they are intended to secure:
GDGL-1: Used for P38 rails.
GDGL-2: Used for P43 rails (the most common industrial standard).
GDGL-3: Used for P50 rails.
GDGL-4 to GDGL-7: Designed for heavier QU70 up to QU120 crane rails.
Signum Rail Fastening is able to offer rail clamps(rail clips) according to the client’s requirements.
Contact us now to get a quote.
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