IMO E4 038N1 LRBE A141 Triple Screw Pump 50 Bar

IMO E4 038N1 LRBE A141 Triple Screw Pump

The IMO E4 038N1 LRBE A141 is a highly efficient positive constant displacement rotary triple screw pump, specifically developed for tough maritime and industrial uses. The three screw pump is known for its hydrodynamic balance and very low noise level. It offers a smooth and pulsationless fluid flow at high pressure.

This unique unit is a real, made-in-sweden example from 2006, in New Open Box condition. It incorporates a heavy-duty mechanical shaft seal, designed to reliably handle hydraulic fluids, lubricating oils and various grades of marine fuels with no loss of volumetric efficiency.

Model Details:

• Brand Name: IMO
• Type/Model: E4 038N1 LRBE A141
• Manufacturer Part Number (MPN): E4-038N1-LRBE-A141
• Serial Number (S/N): 571815
• Country of Origin (COO): Sweden
• Manufacturing Year: 2006

Technical Details: IMO E4 038N1 LRBE A141

Main Features of Product:

1. Pulsation-Free High Pressure Provides a very stable, low-noise fluid delivery rate up to 125 L/min at a maximum continuous pressure of 50 bar.
2. Hydrodynamically Balanced Rotors: The power rotor is hydrodynamically balanced with the two sealing idler rotors so that there are no axial pressure and frictional loads on the power rotor for long equipment life.
3. Premium mechanical seal: This unit has a mechanical shaft seal of exceptional durability, preventing fluid leakage under different heat and pressure situations.
4. Flexible Marine Power Compatibility: Ideal for 50/60 Hz networks and supports 110V, 220V or 440V, as found in aboard marine auxiliary machinery.

Compatibility

This IMO E4 series pump is fully backward-compatible with legacy maritime fluid skids and modular fuel systems configured for the 038 frame size.

• Direct Fit Replacement For: IMO E4-038 series configurations.
• Cross-References: Can replace specific baseline configurations of Allweiler, Leistritz, or Hydroster triple screw pumps within similar dimensions, displacement rates, and 50-bar parameters (verify mounting flange layouts before installation).

NDMarineTech’s Marine Engineer Guide:

When unboxing a surplus 2006 unit like this IMO E4 038, never mount it directly to the motor without a thorough manual pre-commissioning check. Because it has been sitting in storage as an open-box item, the internal mechanical seal and idling screws must be hand-lubricated with clean system oil before initial startup.

Pro-Tips:

1. Prime Before Crank: Running a triple screw pump dry for even a few seconds will scorch the hydrodynamically balanced idler bores. Always fill the pump housing with fluid prior to testing or running.
2. Alignment Tolerance: Ensure precise laser alignment between the pump shaft and the electric motor. Any angular misalignment will impose an axial load on the power rotor’s ball bearing, completely defeating the pump’s hydraulic self-balancing design.
3. Suction Filtration: Screw pumps hate hard particulate contamination. Ensure a suction strainer (minimum filtration threshold 100–150 microns) is installed upstream to avoid catastrophic scratching of the power rotor screws.