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W-Technologies Hydraulic Shock Dampers

W-Technologies standard hydraulic shock dampers can eliminate the break through shock associated with blanking operations, therefore minimizing the noise and vibration. Our shock dampers are designed to provide a counter pressure force, upward, at the moment of part breakthrough. Properly sized and adjusted, our shock dampers will eliminate the reverse load or tonnage during blanking. They will also allow you to increase your blanking capacity (tonnage) on each press that has dampers.

Our Application Engineers can help you determine what shock dampers are right for your application. Tell us your press tonnage, material type, material thickness, yield strength, press stroke, available bolster space and we’ll provide you a recommendation.

W-Technologies Shock Dampers

W-Technologies, Inc. fabricates standard hydraulic shock dampers designed to eliminate the destructive effects of reverse loading.

  • Dramatic reduction in noise and vibration
  • Enhanced tooling life (3 to 5 times)
  • Reduced mechanical and hydraulic press failures
  • Extends mechanical or hydraulic press life
  • Allows for off center loading
  • Allows presses to increase blanking tonnage capacity to 95% of press capacity
  • Increases production speed
W-technologies shock dampers
W-Technologies Shock Dampers


Who Needs Shock Dampers?

Custom hydraulic shock dampers are beneficial in any blanking, punching or die trimming application of metal, plastics or composites that is experiencing excessive reverse shock, premature die wear, fatigued press components or hydraulic system failure at part breakthrough.

What Are Hydraulic Shock Dampers?

The reverse load released at the moment of material fracture in press blanking, punching and die trim applications generates shock loads that degrade press, tooling life and part quality. Hydraulic shock dampers absorb this energy without derating press capacity. Dampers are installed next to the tooling on the bed of the press and engage a striker plate or counter pressure post at the time in the press stroke when the punch contacts the work material. As blanking force builds, the shock damper pistons retract with little resistance bypassing oil through internal orifices and pressure valves assembled within the cylinder. At the moment of break through, these passages restrict the bypass oil to resist the downward acceleration of the press slide and tooling.

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