Hydraulic pump cartridges are modular assemblies that house the rotating mechanism of the pump and offer the advantages of easy maintenance and serviceability, faster pump change outs, and reduced downtime during pump maintenance. Depending upon the application, hydraulic pump cartridges also provide a means of changing the pumping volume by replacing a cartridge with different volumetric characteristics.
Applications for Hydraulics
Hydraulic oil seals are used in the chemical industry as piston and rod seals for hydraulic cylinders or in hydraulic valve packing. Hydraulic seals for the chemical industry are noteworthy for the ability to withstand high pressures of over 6000 psi and tolerate hazardous work environments. There are many types of hydraulic seals with elastomeric seals (O-rings) being the most common. Seals used in fluid power devices are usually elastomers, which are rubbers or soft plastics that allow the seal to flex or adapt to the small gaps created by pressurized components.
In aerial work platforms, pressure gauges are used for both hydraulic oil pressure indication and as a test gauge for maintenance. Hydraulic oil pressure gauges are typically mounted in the aerial work platform’s operator control panel and tied into low-pressure annunciators that alarm the operator in the event of a hydraulic fluid leak, a low oil level in the reservoir, or a failure of the hydraulic pump and associated control valves.
The raising or lowering of the booms, beams or jibs of aerial work platforms is performed by hydraulic cylinders that are controlled by directional control valves and powered by a hydraulic power unit consisting of a tank, a hydraulic pump and safety relief valves. Aerial work platforms use double acting, hydraulic cylinders in order to obtain the up and down movement of the platform’s lift components. It should be noted that not all designs of aerial work platforms use hydraulic cylinders as the primary means of platform component movement.
Aerial work platforms (AEPs) use gear and piston pumps for the hydraulic system drive to power the hydraulic cylinders or actuators that raise or lower the platform. Designed specifically for mobile, hydraulic applications, the current generation of gear and piston pumps used on aerial work platforms feature quiet operation, greater efficiency, reduced weight, high power density, and reversibility capabilities.
Aerial Work Platforms (AEPs) are hydraulically controlled machines used for raising or lowering a platform, supported by a scissors, jib or boom, that holds work personnel while they perform construction, repair or maintenance activities. The high power density, force multiplication, characteristic of hydraulic control systems is leveraged in aerial work platforms and gives them the capability of transferring a large amount of hydraulic power with relatively compact-sized hydraulic components.