This standard specifies the types and dimensions of the spindle ends of bench-top drilling machines, general-purpose bench-top drilling machines, and light-duty bench-top drilling machines. This standard applies to the spindles of benchtop drilling machines, general benchtop drilling machines, and light benchtop drilling machines.
JB/T 5756-1991 history
2006JB/T 5245.6-2006 Bench drilling machines Part 6: Spindle taper