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Pneumatic-Hydraulic Power Units are used on welding tools and lines, or on equipment in general where devices or tools need to be moved and positioned. Also referred to as Swinging Pneumatic-Hydraulic Power Units, they can be supplied standard in either vertical or horizontal versions, with three main opening angles, 45° - 90° - 135° for vertical models or 45° - 90° - 120° for horizontal models. Different angles can be supplied to meet customer requirements. There are two types of Pneumatic-Hydraulic Power Unit: the first has a 100 mm-bore pneumatic cylinder, whereas for the second there are three bore sizes – 125, 160 and 200 mm. The hydraulic part regulates the functioning of the pneumatic cylinder by means of its own internal circuit and so ensures stable motion. Each unit is supplied with a safety feature, a hydraulic fuse in the circuit that, in the event of a pressure drop on the pneumatic feed, immediately blocks the unit without causing damage to tools. As opposed to the GR version the RC version uses a hydraulic system inside the pneumatic cylinder piston rod to enable control of movement of the load applied. Thanks to this system, a constant, even speed can be maintained during transport of the mass, so avoiding brusque movements and violent collisions at the end of the stroke. |
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