GB/T 2861.2-2008Guide unit for stamping dies - Part 2: Guide pillars for ball-bearing (English PDF)

1 Scope

This section provides a guide die rolling guide pillar structure, dimensions and marking.

This section applies to the die guide with rolling guide pillar.

2 Normative references

The following documents contain provisions which, through reference to GB/T 2861 to the present, constitute provisions of this section. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section

Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

JB/T 8070 die mold parts and technical conditions

JB/T 8071 to check the accuracy of the die mold

3 Dimensions

Rolling guide pillar structure and dimensions shown in Figure 1, Table 1.

Un surface roughness R Rao 6.3µm.

allowed to remain a center hole.

b allowed to keep the center hole, and limit the process is related to the structure and size is determined by the manufacturer.

c pressed into the end allows the use of imported stepped structure.

NOTE. R determined by the manufacturer.

Figure 1 rolling guide pillar

4 material and hardness

Materials selected by the manufacturer, recommended 20Cr, GCr15.

20Cr carburizing depth of 0.8mm ~ 1.2mm, hardness 60HRC ~ 64HRC; GCr15 Hardness 60HRC ~ 64HRC.