Sizing - Import export

Gidrolast specialises in the design and manufacture of both Single Acting and Double Acting Telescopic Hydraulic Cylinders. We build both standard catalogue telescopic designs as well as custom application engineered telescopic cylinders. Often a hydraulic cylinder is required to fit into a very tight space and yet provide a stroke that is actually longer than its fully retracted length. A standard rod cylinder cannot do this. A telescopic cylinder, however, can achieve a very long stroke from a compact retracted length. Telescopic cylinders use a series of nested tubular segments sliding within one another (see diagram below). This enables them to provide a very long output stroke from a very short retracted length in one combined actuator. These cylinders are available in 2, 3, 4, 5, or even 6 stages. Most telescoping cylinders are single acting. That means that they extend using hydraulic pressure but then retract using gravity and the mass of the load.

Mining equipment is continually subjected to tortuous conditions that punish hydraulic cylinders. These gruelling conditions include dust, grit, heat, cold and moisture. In addition, the equipment is subject to slamming loads and mechanical impacts. Gidrolast designs and manufactures heavy-duty hydraulic cylinders that endure these very difficult conditions. Gidrolast cylinders can be found on hydraulic equipment in surface and sub-surface mining operations all around the globe. They are installed on dredgers, hydraulic shovels, dump trucks, oversized off-road equipment, tunnel boring machines, ore haulers, ore crushers and aggregate conveyors, to name but a few. We manufacture both rod cylinders and telescopic cylinders, double and single action, in sizes from 12mm (1/2″) up to 700mm (28″) bore. Call us to find out why mining equipment OEM’s around the world depend on Gidrolast cylinders.

Hydraulic cylinders used on shipboard machinery or in shipyards must endure the toughest of conditions, including hot and cold temperature extremes, exposure to salt water, driving rain, ice, as well as dirt and many other forms of contamination. That is an extremely abusive environment for hydraulic actuators. Cylinders used under these conditions must be designed and manufactured with these well in mind if they are to survive and work reliably. In addition, many hydraulic cylinders used on ships and harbour cranes are very large-bore and very long-stroke. Their large size makes frequent repair or replacement simply out of the question. Other marine cylinders are mounted in a ship’s machinery that is very difficult to reach. All these factors makes reliability a primary concern for marine cylinders. Gidrolast has a great deal of experience in building marine-grade hydraulic cylinders that thrive under those trying conditions.