Internally Ported Hydraulic Rams

Delta designs and manufactures internally ported hydraulic rams.

How It Works

This cylinder design incorporates oil extension and retraction ports which are drilled through the rod which enable the flow of hydraulic fluids that power the piston to flow internally within the cylinder without the need for external hoses or line tube.

Applications

Internally ported cylinders are used in reliability critical applications where the operating environment could expose external hoses and tubes to physical, fire or chemical damage.

Internally ported cylinders are also used in applications where the cylinder is mounted on the machine or equipment and there is no space for external hoses and tubes.

Delta Hydraulics' internally ported hydraulic cylinders power the side-shift movement in Caterpillar Long Wall Mining Roof Support Systems
(See the side shift movement at 2.23m to 2.42m)
Cylinder specification:
Bore135mm
Rod: 90mm
Stroke: 240mm
Rod coating: DeltaC ceramic coating
Porting: Extension and retraction ported internally through the rod