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丹佛斯威格士SM4-40選型樣本

時間:2024-4-15閱讀:169
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        Vickers SM4-40 servovalves can provide system closed loop control with exact positional accuracy, repeatable velocity profiles, and predictable force or torque regulation.

        Typical applications include plastic injection molding and blow molding systems, test and simulation equipment, die casting machines, hydraulic press brakes, animation and entertainment equipment, oil exploration vehicles, and lumber machinery.

        Applications of the 350 bar (5000 psi) SM4-40 (-50 design) include automatic gage control (AGC), roll bend/roll balance systems, plastic injection molding systems, test and simulation equipment, and hydraulic press brakes.

        This model of the high performance SM4 series offers a wide range of ratedflows from 76 to 151 l/min (20 to 40 USgpm) at p of 70 bar (1000 psi).

       The SM4 is a two-stage, modular design, flow control valve which can be manifold or subplate mounted. The symmetrical, dual coil, quad air gap torque motor is integrally mounted to the first stage nozzle flapper pilot valve with six screws. The second stage utilizes a four-way sliding spool and sleeve arrangement with a mechanical null adjust. Spool position is fed back to the first stage by means of a cantilever spring. An integral 35 micron (absolute) filter protects against contamination of the first stage.

        An SM4 servovalve, used with a hydraulic cylinder, position transducer, and appropriate electronics, can provide infinite cylinder position control to within 0,025 mm (0.001 in) or better (dependingon component selection, length of stroke, and load characteristics).


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