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ANSI B11.3 2012 Edition, January 1, 2012
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Safety Requirements for Power Press Brakes
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The requirements of this standard apply to those machines classified as power press brakes (hereinafter referred to simply as "press brakes"), which are designed and constructed for the specific purpose of bending material.

Where used in this standard, the terms machine or machine system refer to the press brake or press brake production system, respectively.