The hydraulic hose fabrication process – or more specifically – the hose cutting process introduces contamination. This comprises metal particles from the hose’s wire reinforcement and the cutting blade itself, and polymer dust from the hydraulic hose’s out cover and inner tube.
The amount of contamination which enters the hose during cutting can be reduced by employing techniques such as using a wet cutting blade instead of a dry one, blowing clean air through the hose as it is being cut and/or using a vacuum extraction device. The latter two aren’t very practical when cutting long lengths of hose from … continue reading »
Troubleshooting hydraulic systems can be a complex exercise. It involves a lot of science and sometimes, a bit of art. Incorrect diagnosis prolongs downtime and can result in the unnecessary repair or replacement of serviceable components. To avoid these costly mistakes, the correct equipment and a logical approach are required.
Before you incur the expense of hiring a technician, assess the problem and eliminate all of the obvious, possible causes. I have lost count of the number of times that I’ve been called to a problem and found that the cause was something quite simple. A wire broken off a … continue reading »
Many industrialized countries have regulations that restrict noise levels in the workplace. The high power density, and corresponding high noise emission of hydraulic components, means that industrial hydraulic systems are often the target of efforts to reduce mean noise levels in the workplace.
The dominant source of noise in hydraulic systems is the pump. The hydraulic pump transmits structure-borne and fluid-borne noise into the system and radiates air-borne noise.
All positive-displacement hydraulic pumps have a specific number of pumping chambers, which operate in a continuous cycle of opening to be filled (inlet), closing to prevent back flow, opening to expel … continue reading »