Plastics & Injection Molding

Hydraulic Valves

Updated hydraulic presses save O-ring maker money, time

Company saves nearly $200,000, makes more parts, and increases sales by upgrading existing hydraulic presses.
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Cylinders & Actuators

Smooth travel, long life

The proper use of internal cushions and external shock absorbers is crucial for maximum actuator life.
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Hydraulic Valves

Digital proportional valve controls flow and pressure

Electrohydraulic proportional directional control valves from Atos Spa (below) provide closed-loop flow and pressure control, which lends itself to injection molding, metal die...
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Hydraulic Valves

Electrohydraulics in Parison control

Parison control is used in plastic blow-molding machines to achieve optimum and uniform wall thickness of continuously extruded profiles. This can be accomplished with zero-lapped...
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Seals

To boost life and reliability, don't skimp on seals

Because injection molded plastics involve high pressures and temperatures, seals must be able to withstand these adverse conditions. Seals are among the least expensive components...
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Hydraulic Pumps & Motors

Unconventional HPUs make machines energy misers

This HPU breaks from convention by using a fixed-displacement pump and variable-speed electric drive to match pump output to load demand. The control box at right houses electronic...