2 SOUND POWER CURVES FLANGE CODE 03, 06, 07, 12 4 - 8 10 - 11 THE POWER OF THEWQ900 A SERIES Concentric is one of the world’s leading manufacturers of hydraulic pumps. In recent years we have focused on important markets, such as materials handling and vehicles, and now the result are in: a series of high performance hydraulic pumps. The WQ900 series builds on the versatile technical platform represented by the W series. WQ900 High Pressure Gear Pumps are optimized for demandingwork, with harsh weather conditions, ruggedoperations and long service intervals. The WQ900 series is a range of cost-efficient group ll pumps for all applications inwhich the customer’s demands for quality and reliability are particularly high. The ”Q” stands for super ”quiet” operation and outstandingproperties of theWQ900 result from: 1st a new and carefully engi neered tooth geometry. 2nd an innovative approach togear flank engagement. 3rd a reduced volume of trapped oil and 4th advanced trapped oil management. The size of pressure pulsation from the pumps is reflected in the pump noice level and the pressure pulsation is minimized to 25%. We achieved a reduction for the pressure pulsation of 75%by the newly developed, computer generated gear design for theWQ900 pumps . The noise levels are shown on page 10-11. Pictures on front page are used with the kind permission of eg: Atlet, BT, Huddig, Scania, Toro and Volvo Construction Equipment. The right to modifications for technical improvements is reserved. MULTIPLE PUMPS 9 quality products for mechanical & fluid power ~ jbj Techniques Limited, www.jbj.co.uk UK distributor for Concentric Hydraulics
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