Viking introduces gearbox-less electric motor-driven internal gear pump

Viking Pump has introduced a new internal gear pump that can be driven by standard electric motors without the need for a gearbox.

The Viking Motor Speed pump is designed to run at higher speeds and deliver increased flows resulting in a more cost-effective pumping solution requiring less space and at reduced cost.

The pumps are able to be driven by standard electric motors at either 720, 960 or 1450rpm, without the need for a reduction gearbox.

The range includes models providing flows up to 88m³/h at standard motor speeds, or 132m³/h with speed reducers or gearboxes.

The pump head incorporates idler and rotor speed grooves to improve axial feed, a liquid directing step to reduce turbulence, a modified crescent to boost radial feed, and improved port geometry to optimise flow paths.

The pump rotor’s profile has also been increased and, on larger models, the standard idler material is hardened steel case hardened to 39 Rockwell C to reduce the effects of cavitation.

Other features of the Motor Speed series include a pressure lubricated idler pin and bushing to enhance the pin and bushing life, sealed anti-friction bearings eliminating the need for re-lubrication, a behind-the-rotor seal that means the drive shaft and bearings are not exposed to the pumped media, and a threaded one-piece bearing housing that allows for easy end clearance adjustment.

Viking Motor Speed pumps are available in a close-coupled and long-coupled drive options for motor speed operation and with gearboxes or speed reducers for reduced speed operation.

The new Motor Speed pumps are designed to meet the demands of heavy-duty, industrial pumping applications, even in the most challenging environments.

Typical applications will be transferring refined fuels such as diesel and biofuels, crude oil, edible oils, lubrication and hydraulic oils, as well as chemicals including solvents, glycols, and refrigerants.