ELDRO® Direct current series
ELDRO® Direct Current Series Eg – Reliable Electrohydraulic Thrusters
The ELDRO® DC series Eg stands out in the field of electrohydraulic thruster solutions, designed specifically for applications where a direct current power supply is available. These heavy-duty thrusters ensure consistent and safe operation of industrial brake systems, even in the event of a voltage failure in the main three-phase supply. This makes them perfectly suited for critical safety functions, such as the controlled opening of brakes in lifting equipment, allowing loads to be safely lowered in emergency scenarios.
Key Applications
- Industrial braking thruster in systems with direct current power sources
- Secondary brake thruster to ensure load safety during power outages or voltage breakdown
- Lifting units and equipment requiring safe lowering and positioning in critical conditions
Main Advantages
- Designed for existing DC supply systems, ideally suited for applications where three-phase AC is not available or unreliable
- Provides safe actuation of thruster brake systems during main power failure, supporting supply from backup batteries
- Rugged construction with corrosion-resistant coatings and advanced sealing for demanding industrial environments
- Flexible mounting options, including base fastening rotation
- Continuous (S1) and intermittent (S3 – 60% duty cycle) operation possible
- Enhanced dust and mechanical protection, including piston rod protective tube for larger models
- Integrated or optional limit switches for position feedback
- Steplessly adjustable lifting and lowering times via integrated control valves
- Available with heavy-duty C-spring for integrated brake force generation
Technical Data Overview
| Type | Lifting Force [N] | Stroke Path [mm] | Power Consumption [W] | Current at 220 V DC [A] | Switching Frequency S3 [c/h] | Weight [kg] |
|---|---|---|---|---|---|---|
| Eg 50/… | 500 | 60–120 | 350 | 1.60 | 600–1,000* | 27–31* |
| Eg 80/… | 800 | 60–120 | 330 | 1.50 | 600–1,000* | 27–31* |
| Eg 121/… | 1,250 | 60–120 | 330 | 1.50 | 500–1,000* | 43–44* |
| Eg 201/… | 2,000 | 60–120 | 430 | 2.00 | 500–1,000* | 43–44* |
| Eg 301/… | 3,000 | 60–120 | 470 | 2.20 | 400–800* | 43–44* |
*Depending on stroke path
Design Features
- Enclosure protection up to IP 65 (optionally IP 68)
- Suitable for mineral hydraulic oil or silicone oil
- Standard paint RAL 7022, higher corrosion protection for aggressive environments available
- Standard DC shunt motor according to DIN VDE 0530, insulation class F
- Nominal voltage 220 V DC (special windings between 24 V and 500 V DC available on request)
Optional Equipment
- Lifting/lowering valves for time adjustment
- Mechanical/inductive limit switches for electrical feedback
- Versions with integrated brake spring (C-spring), force range: 460–2,700 N
- Extended external corrosion protection for aggressive or humid environments
For detailed dimensions and specific selection, please refer to the technical documentation or consult with our specialists.
Description
