ED201/6 Ex Explosion-Protected Electro-Hydraulic Thruster

ED201/6 Ex Explosion-Protected Electro-Hydraulic Thruster

The ED200/6 Ex is a high-performance, Explosion-Protected (Flameproof) electro-hydraulic thruster. It serves as a specialized actuator designed to operate braking systems and valve mechanisms in hazardous environments where explosive gases, vapors, or dust are present.

The model number breakdown is as follows:

ED: The series designation for modern, compact electro-hydraulic thrusters.

200: The Rated Thrust of 2000 N (approx. 200 kgf).

6: The Nominal Stroke of 60 mm (The number represents the stroke in mm divided by 10).

Ex: Indicates the unit is certified for Explosive Atmospheres.

💡 Key Features & Characteristics

Explosion-Proof Certification:
The unit features a flameproof enclosure designed to prevent internal sparks from igniting the surrounding atmosphere.

Marking: Typically carries ExdI (for underground coal mines) and ExdII (for factories with flammable gases) certifications.

Safety: The motor junction box and housing are reinforced to contain explosions, utilizing sealed cable entries to maintain防爆 (explosion-proof) integrity.

High Thrust Capability:
As a "201" frame size unit, this thruster generates significant force. While standard ED201 units typically produce 2000 N of thrust, the Ex variant is built with reinforced components to maintain this performance safely in hazardous zones.

Robust Construction:

Housing: Made of die-cast aluminum alloy, which is lightweight and corrosion-resistant.

Motor: Non-immersed oil motor with Class F insulation and IP65 protection, ensuring reliability in dusty and wet conditions.

Piston Rod: Surface-hardened and chrome-plated to resist corrosion and wear.

Integrated Mechanism:
Combines the motor, centrifugal pump, and oil cylinder into one compact unit. It operates by generating hydraulic pressure to push the rod upward; upon power loss, the rod returns via gravity and the brake's return spring.

Operational Flexibility:

Temperature: Designed to operate in environments ranging from -20°C to +50°C.

Installation: Can be installed vertically or at various angles (0-180°) thanks to the balance air chamber design.

🏭 Typical Applications

The ED201/6 Ex is specifically engineered for hazardous zones in heavy industry:

Coal Mining: Underground belt conveyors, hoists, and winches (ExdI rated).

Petrochemical: Refineries and chemical plants where flammable vapors exist.

Ports & Terminals: Handling explosive bulk materials (grain dust, coal dust).

Brake Actuation: Used as the power source for YWZ series explosion-proof drum brakes.

📋 General Technical Specifications

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Note: The "ED" series is the modern standard, often replacing older "YT1" or "BEd" series units. When replacing a unit, ensure the voltage (380V vs 660V) matches your supply, as these motors are often rewired for different mine voltages. Always ensure the防爆 (flameproof) mating surfaces are clean and undamaged during installation to maintain safety certification.

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