ELIKA helical gear pumps from jbj Techniques

ELIKA’s low-noise, low-pulsation hydraulic helical gear pump is “a perfect fit for all applications that require low noise levels", says UK Marzocchi Pompe distributor jbj Techniques, with the pump said to reduce the noise level by an average of 15 dBA, compared with a conventional external gear pump.

Noise reduction can be up to 20 dBA, it is reported, depending on size of pump. This includes groups 1, 2, 3 and 4 and also multiple pump combinations.

Here are some of the key benefits singled out:

• The low number of teeth reduces the fundamental frequencies of the pump noise, producing less sound
• The helical profile of the gears reduces pressure oscillations and vibrations produced by the pump and transmitted to the other components, reducing the noise of the hydraulic system
• Axial forces induced by the helical teeth are optimally balanced in all operating conditions by the axial compensation system integrated in the pump cover.

“Specific compensation areas into flange and cover, insulated by special gaskets reinforced with anti-extrusion, allow for fully free axial and radial movement of the bushings, which is proportional to pump operating pressure,” adds jbj Techniques. “In this way, internal leakage is dramatically reduced, ensuring very good volumetric and mechanical pump performance, as well as excellent lubrication of the pump’s moving parts.”

ELIKA pumps are available in both uni-directional clockwise and counter clockwise rotation.