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BEd301/6 Series Explosion-Protected Electro-Hydraulic
🛠️ Product Overview: BEd-301/6 This thruster is an asynchronous motor-driven hydraulic actuator with an integrated explosion-proof housing . It is widely used as the driving force for industrial brakes and various linear actuation mechanisms. Model Decoding: BEd: Explosion-Protected...
Description
🛠️ Product Overview: BEd-301/6
This thruster is an asynchronous motor-driven hydraulic actuator with an integrated explosion-proof housing. It is widely used as the driving force for industrial brakes and various linear actuation mechanisms.
Model Decoding:
BEd: Explosion-Protected Electro-Hydraulic Thruster (B = Explosion-proof, E = Electro-hydraulic, d = Flameproof).
301: Frame size / Power rating (indicates a high-power model).
6: Stroke length code (typically corresponding to 60mm of stroke).
📋 Key Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Model | BEd-301/6 | Heavy-duty explosion-proof thruster. |
| Rated Thrust | Approx. 3000 N | Force generated during extension. |
| Stroke | 60 mm | Standard stroke length for the "/6" variant. |
| Motor Power | 1.5 kW | Three-phase AC motor. |
| Voltage | 380V / 660V / 1140V | 3-phase, 50Hz (Standard industrial voltages). |
| Duty Cycle | S1 (Continuous) | Can also operate in S3 intermittent mode. |
| Weight | Approx. 70 kg | Cast iron/aluminum alloy housing. |
✨ Key Features
Explosion-Proof Design (Ex d I Mb):
The motor housing is flameproof, certified for use in coal mines and other hazardous areas. It prevents internal sparks from igniting the surrounding explosive atmosphere (specifically rated for Methane and Coal Dust environments).
Integrated Structure:
Combines the motor, oil pump (impeller), and cylinder in one casting. This makes it leak-proof, compact, and highly reliable compared to separate hydraulic power units.
Fail-Safe Capability:
While the thruster extends when powered, it is frequently used in fail-safe brake systems. If power fails, the thruster retracts (via spring or gravity), and the brake automatically engages to secure the load.
Robust Construction:
Non-oil-immersed motor: The motor is sealed off from the hydraulic oil, preventing insulation degradation.
Hard Chrome Plating: The piston rod is plated to resist wear and corrosion.
Low Maintenance:
The hydraulic system is fully sealed with double-sealed oil chambers, reducing the need for frequent maintenance and extending service life.
🏭 Typical Applications
The BEd-301/6 is essential for safety in hazardous locations:
Coal Mines: Operating brakes and valves in underground shafts and conveyor systems.
Petrochemical Plants: Actuating machinery in areas with explosive vapors.
Heavy Machinery: Driving YWZ series drum brakes on cranes, hoists, and large conveyors.
Port Equipment: Safety systems for ship unloaders and gantry cranes.
💡 Maintenance & Usage Tips
Oil Level: Check the hydraulic oil level regularly. Use DB-25 hydraulic oil for standard temperatures. Use YH-10 aviation hydraulic oil if temperatures drop below -20°C.
Heater: If operating in very cold environments (< -20°C), consider ordering the model with a built-in heater to prevent oil viscosity issues.
Radial Load: The piston rod should not bear radial loads (side forces); it is designed for axial (push/pull) forces only.
Certification: Ensure the unit carries the "MA" (Mine Safety) mark if used in underground coal mines.
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