2.3.5 D Attachment (Extended Pin)
In this form, the one end of the pin is extended. The attachment interval can vary the same as the A attachment (Figure 2.26).
As shown in Figure 2.27, two sets of D attachment chains can be connected to crossrods, or jigs (such as blocks) may be installed.
The extended pins are subjected to bending and shearing forces. The allowable load of D attachment that is shown in a manufacturer's catalog is based on a bending force concentrated at the center of the extended pin.
The return side of the D attachment chain can be supported by guide rails on the rollers.
Figure 2.26 D-3 Attachment (Extended Pin)
Figure 2.27 D Attachments with Crossrods and Jigs