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ANSI B11.25-2015

Safety Requirements for Large Machines.

This standard applies to machines with a work envelope equal to or greater than two cubic meters (2 m3) or two meters of linear axis travel, or where personnel are regularly required to enter into the working envelope to perform work or tasks. The requirements in this standard apply to all large machines, unless they are specifically covered in or by another standard. This document is intended to be used with both ANSI B11.0 and ANSI B11.19 to execute the risk assessment process and the safeguarding of machinery respectively. The requirements of this standard do not apply to turning machines and turning centers designed to accept work holding devices less than 500 mm (20 inches) outside diameter and with a distance between centers less than 2 meters (80 inches).

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The Association for Manufacturing Technology [AMT]


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.