The high demand for EMG thruster units often results in low stock across distribution channels. Replacing an electrohydraulic thruster can impair project lead times significantly and introduce a significant cost burden. Adhering to a proper repair and maintenance protocol enables a quicker and more economical turnaround.
Design and Operation
ELDRO and ELHY electrohydraulic thrusters are built with scalable, long-term use in mind. Versatility in a wide range of environmental and project-specific scenarios is prioritized in the design.
Primary design features include:
- Reliability and long service life
- Minimized regulating periods – fast response
- Multipurpose designs may be specified for the environment
- Operational overload protection
- Straightforward assembly, disassembly, and installation
- Multidirectional motor rotation – removing the need for reversing contractor components
- Switching frequency graded to 2000 cycles per hour
- Adjustable stroke
- Modifiable lift and lower times
EMG thrusters are commonly employed industrially in crane, mining, and conveyor machinery. Systems demanding high-duty cycles in harsh operative conditions can stand to benefit from an electrohydraulic thruster unit.
ELDRO
ELDRO thrusters are built according to a coaxial functional assembly comprised of an electric motor and hydraulic unit. Implicit to a hydraulic system, thrust is generated via an appropriate operating fluid modulated by a centrifugal pump. The piston is designed to retract automatically if operational power is lost, and the brake springs will lock into place.
ELHY
ELHY brake thrusters are compact, low-noise units provided in several models bearing the same general structure. A three-phase motor is housed at the base, attached to a terminal box. The hydraulic pump is seated atop the motor, which connects to the piston and rod shaft. The ELHY model is crafted to ensure last-line defense against power failures and operative malfunctions.
Risk Factors
Electrohydraulic thrusters are often subject to extreme conditions. The intentional balancing of a thruster’s internal components and casings requires special awareness on behalf of operator and machine wellbeing.
EMG units are equipped with positional measurement systems and internal level indicators. These mechanisms indicate stroke path, piston rod depth, and release or brake position. In addition, limit switches may be utilized to provide more sophisticated data. Careful monitoring of EMG measurements can give a predictable baseline and point toward equipment fitness.
Corrosion is an active risk for any mechanism operating in high relative humidity or conditions where excessive condensation builds. EMG thrusters are fitted with redundant seals and protective tubing, but increased protection is recommended for intensive circumstances. Operators may consider the use of parking heaters or specialized sealing paint for the housing structure.
Repair and Maintenance Protocol
Kor-Pak offers consultations for use and rapid turnover repair services of EMG thruster units.
Our standard repair process involves complete strip-down disassembly of the electrohydraulic unit. Kor-Pak conducts a thorough visual inspection of each component. Housing, motor, piston, and brake assemblies are evaluated for damage related to corrosion, impact, and excessive wear. Bearings, seals, gaskets, and paint are replaced as part of our service.
Each repaired unit is put through a load and environmental condition check, then certified by Kor-Pak’s specialists.
Contact us for a quote or additional information.