This part of JB/T 12642 specifies the structural type and size, materials, requirements and markings of the motor core progressive die limit column. This section applies to the motor core progressive die limit posts.
JB/T 12642.9-2016 Referenced Document
JB/T 11904-2014 Progressive dies for motor cores.Specifications
JB/T 12642.9-2016 history
2016JB/T 12642.9-2016 Progressive dies for motor cores.Components.Part 9: Limited posts