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Automatic Draught Device

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Automatic Draught Device

Mounting Flange Dimension : 160 ×100 mm / 140 ×80 mm (Optional)

Product Name : Automatic Draught Device / Drawbar Coupling

V Value : 75 kN

Material : Alloy Forged Steel

Locking Mechanism : Auto lock with visual safety indicator

Compatible Drawbar Eye Diameter : 50 mm

Dc Value (Equivalent coupling force) : 140 kN

Model : C50 Heavy Duty

Application : Semi-trailer, Dolly, Truck Trailer, Tank Trailer

D Value : 280 kN

Operation Type : Automatic engage, Manual release

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Product Overview

This Automatic Draught Device, also known as heavy-duty drawbar coupling, is a core connection component for truck, dolly and semi-trailer combinations. It is engineered to securely connect the towing vehicle and trailer, transmitting longitudinal traction and braking force. Equipped with manual safety release lever and automatic locking mechanism, the coupling achieves automatic engagement when mating with a 50mm drawbar eye. The robust forged steel construction ensures high impact resistance and fatigue strength under heavy load and bumpy road conditions. This unit complies with ECE R55 regulation, widely used for medium & heavy-duty trailers, dollies, tanker trailers and construction transport vehicles.

Key Features

. Auto-lock function: Automatically locks after drawbar eye insertion; manual lever for safe unlocking.
. High-strength forged body: Alloy steel forging, anti-fatigue, shock resistant.
. Reliable safety interlock: Visual safety indicator to confirm locked status, prevent accidental disconnection.
. Surface treatment: Electro-deposition coating, excellent corrosion resistance.
. Easy maintenance: Modular structure, replaceable wearing parts.
. Standard 50mm drawbar eye compatible.

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