🛠️ What is the Ed301/6?
The Ed301/6 is a specific model within the Ed Series of electro-hydraulic thrusters. It is a self-contained unit that combines an electric motor, an oil pump (impeller), and a cylinder to convert electrical energy into linear motion.
Operation Principle: When the motor is powered, it drives an impeller to pump oil, forcing the piston rod to extend (push). When power is cut, a return spring (or gravity, depending on the setup) retracts the rod.
Model Meaning:
Ed: Electro-hydraulic thruster.
301: Frame size / Power rating (indicates a medium to high-power model).
6: Stroke length code (typically corresponding to 60mm of stroke).
📋 Key Specifications
表格
| Parameter | Specification | Notes |
|---|---|---|
| Model | Ed301/6 | Heavy-duty industrial thruster. |
| Rated Thrust | Approx. 3000 N | Force generated during extension. |
| Stroke | 60 mm | Standard stroke length for the "/6" variant. |
| Power Supply | AC 380V / 50Hz | Standard 3-phase industrial power (Other voltages available). |
| Duty Cycle | S1 (Continuous) / S3-60% | Suitable for frequent operation. |
| Insulation Class | F | High thermal resistance for long motor life. |
| Protection Level | IP55 / IP65 | Dust and water resistant. |
✨ Key Features
Based on the technical data, here are the defining characteristics:
Integrated Design:
It combines the motor, pump, and cylinder in one casting (often aluminum alloy). This makes it lightweight, compact, and leak-proof compared to separate hydraulic power units.
Fail-Safe Capability:
While the thruster itself is "power-to-move," it is frequently used in fail-safe brake systems. In these setups, the thruster's extension releases the brake; if power fails, the thruster retracts (via spring), and the brake automatically engages.
Adjustable Timing (Optional):
You can add "H" (Rise) or "S" (Fall) valves. These allow you to adjust the speed of the piston movement, enabling a delay in the brake application or release, which is crucial for smooth starts/stops in cranes.
Robust Construction:
Non-oil-immersed motor: The motor is sealed off from the hydraulic oil, preventing insulation degradation.
Hard Chrome Plating: The piston rod and shaft are plated to resist wear and corrosion, extending seal life.
Multi-Angle Installation:
The cylinder body has a balance air chamber. This allows the unit to be installed at various angles (0° to 180°) without affecting performance, providing great flexibility in machine design.
🏭 Typical Applications
The Ed301/6 is primarily used as the "muscle" for:
Brakes: Operating YWZ4, YWZ5, YWZ8, YWZ9 series drum brakes.
Valves: Controlling industrial gates, dampers, and shutoff valves.
Clamping: Used in material handling and assembly lines.
