Machine Guarding eTool
Presses » Hydra-Mechanical Presses
This press combines hydraulic and mechanical operations into one system. Hydra-mechanical presses consist of two basic models: one is actuated by a mechanical treadle/pedal and the other is actuated by an electric foot switch or palm buttons with a complete control system.
Operator Involvement
The operator is responsible to feed or place the stock on the bottom die properly and activate the press cycle with palm buttons, a foot pedal, or a foot switch.
Potential Hazards
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A hand or other body part near the point of operation during cycling can result in severe injury.
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Operating controls, especially foot pedals, introduce the possibility of accidental cycling.
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In forming large pieces, the operator must hold the stock and cycle the press with a foot pedal. As the work stroke begins, the stock will move up or down, creating a hazard.
Solutions
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General machine guards (barrier guards, two-hand tripping devices, electronic safety devices, etc.) must be provided to protect the operator and other employees in the machine area from hazards created by point of operation, nip points, etc. [29 CFR 1910.212(a)(1)]
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Guards must not create hazards themselves, and must be attached to the machine where possible. [29 CFR 1910.212(a)(2), (a)(3)(i)]