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Ed301/8 Electro-hydraulic Thruster
Ed301/8 Electro-hydraulic thruster The Ed301/8 is a heavy-duty Electro-Hydraulic Thruster (also known as a hydraulic pusher or thruster). It is a compact drive unit that integrates a motor, centrifugal pump, and hydraulic cylinder into a single housing. It is primarily used to actuate large...
Description
Ed301/8 Electro-hydraulic thruster
The Ed301/8 is a heavy-duty Electro-Hydraulic Thruster (also known as a hydraulic pusher or thruster). It is a compact drive unit that integrates a motor, centrifugal pump, and hydraulic cylinder into a single housing. It is primarily used to actuate large industrial brakes or operate valves.
The model number breakdown is as follows:
Ed: The series designation for Electro-Hydraulic Thrusters (based on EMG technology).
301: The Size/Thrust Class, indicating a nominal thrust force of approximately 3000 N (300 kgf).
8: The Nominal Stroke (Lift) of 80 mm.
Products Description
💡 Key Features & Characteristics
Integrated Electro-Hydraulic Design:
Construction: The unit combines a three-phase asynchronous motor, a centrifugal pump (impeller), and a hydraulic cylinder.
Operation: When energized, the motor spins the impeller, generating hydraulic pressure that forces the piston and pushrod to rise (extend). When power is cut, the rod retracts via gravity or the return spring force of the connected brake.
High Performance Specifications:
Thrust: Generates a nominal thrust of 3000 N.
Stroke: Provides a vertical lift (stroke) of 80 mm, making it suitable for large brake linings that require significant clearance to release.
Power: Typically equipped with a 550W motor (based on the Ed301 series standard).
Voltage: Standard industrial 380V / 50Hz (3-Phase).
Robust & Durable:
Material: The housing is made of die-cast aluminum alloy, which is lightweight, corrosion-resistant, and aesthetically pleasing.
Protection: The motor features a sealed junction box with cable glands, offering an IP55 or IP65 protection rating against dust and water.
Finish: The piston rod and motor shaft are typically hard chrome-plated to resist wear and corrosion.
Versatile Installation:
Mounting: The cylinder features a balanced air chamber design, allowing the thruster to be installed at 0° to 180° angles (vertical, horizontal, or intermediate).
Rotation: For the Ed301 model, the fixed seat can typically rotate 90°, providing flexibility in mounting orientation.
Maintenance-Free:
Sealing: Uses high-quality, double-seal structures (often imported brands) to prevent oil leakage.
Lubrication: The unit is filled with hydraulic oil at the factory and is generally maintenance-free under normal operating conditions.
🏭 Typical Applications
The Ed301/8 is designed for heavy industrial applications requiring high force and long stroke:
Brake Actuation: The primary use is as the drive unit for large Electro-Hydraulic Drum Brakes (e.g., YWZ series) and Disc Brakes.
Port & Harbor: Ship-to-shore cranes, gantry cranes, and RMGs.
Metallurgy: Steel rolling mills and heavy overhead cranes.
Mining: Large conveyors, ball mills, and hoists.
Industrial Valves: Driving large industrial valves, gates, or dampers.
📋 General Technical Specifications
表格
| Parameter | Description |
|---|---|
| Type | Electro-Hydraulic Thruster |
| Model Series | Ed Series |
| Model Variant | Ed301/8 |
| Nominal Thrust | 3000 N (approx. 300 kg) |
| Nominal Stroke | 80 mm |
| Motor Power | 550 W |
| Power Supply | AC 380V / 50Hz (3-Phase) |
| Duty Cycle | S1 (Continuous) or S3 (Intermittent) |
| Protection Rating | IP55 / IP65 |
| Ambient Temp | -20°C to +40°C |
| Mounting | 0° - 180° (Vertical/Horizontal) |
Note: The Ed301/8 is physically larger and has a longer stroke than the Ed301/6 (60mm). When replacing an older unit, verify the stroke length and mounting dimensions carefully. The "Ed" series is the modern standard, replacing older "YT1" or "TJ2" solenoid designs with a more efficient, smoother, and longer-lasting hydraulic drive.
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