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ANSI B11.13 92nd Edition, January 1, 1992
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Machine Tools - Single and Multiple Spindle Automatic Screw/Bar and Chucking Machines Safety Requirements for Construction, Care and Use
Includes all amendments and changes through Reaffirmation Notice , June 8, 2007
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This standard applies to single-and multiple-spindle automatic bar and chucking machines in which all tool movements is controlled by the machine.

Specific machines shall include, but not be limited to:

a) Single-spindle automatic bar machines of the tool turret-indexing type;

b) Single-spindle automatic machines of the sliding-headstock type, or those with a fixed headstock and a sliding guide bushing (Swiss-type);

c) Single-spindle automatic machines of the tool-rotating type;

d) Single-spindle automatic chucking machines of the collet and chuck types;

e) Multiple-spindle automatic bar machines;

f) Multiple-spindle automatic chucking machines of the collet and chuck types.

Excluded from the scope of this standard are machines that are manually controlled, such as, but not limited to: lathes, engine lathes, tool room lathes, vertical-shaft lathes, copy tracer lathes, gap and sliding-gap lathes, and combination lathes.