One of the advantages of variable-displacement pumps with hydraulic or electro-hydraulic displacement control, or load-sensing control, is their low standby pressure. Meaning, when pump output isn’t required, the pump ‘stands by’ at a relatively low pressure, and usually at zero flow — other than that necessary for the make-up of internal leakage.
From an efficiency (heat-load) perspective, the lower this … Read more
The removal of contamination ‘built-in’ during the assembly of a new hydraulic system, or the removal of internally-generated contamination following a major, catastrophic failure in an existing hydraulic system, is commonly known as flushing.
This type of flushing is usually carried out with a dedicated rig designed specifically for this purpose. And while the hydraulic oil to be used in … Read more
The best time to determine the maintenance and reliability objectives for a piece of hydraulic equipment, and by extension, its life of ownership cost, is before it is purchased. And there are a couple of different ways this objective can be achieved.
Hydraulic equipment users who are sophisticated in their maintenance practices can dictate specific requirements for those variables known … Read more