The IMO E4 is a fixed-displacement, rotary three-screw pump for medium-to-high pressure hydraulic and lubrication service. Fourteen displacement steps span about 10 to 850 l/min, letting one family cover everything from a small lubrication feed to a large hydraulic power unit.

• Power rotor meshed with two idler sealing screws, the only rotating parts
• Axial pressure and friction loads hydraulically balanced
• Locating ball bearing runs at near-zero axial load
• Aluminium or surface-treated cast-iron rotor housing

Three mounting designs cover dry and tank service: the E4 BE for horizontal or vertical flange mounting, the E4 TE for tank-top mounting with a strainer, and the E4 JE with an extended inlet pipe for deep tanks. With a viscosity range of 12 to 400 mm2/s, the series handles lubricating, hydraulic and fuel oils across marine, power and industrial applications.