Weldco-Beales designs a wedge-type quick coupler to accommodate attachment interchangeability among all brands of hydraulic excavators. In the hydraulic-excavator market, attachment design is unique for every manufacturer—pins are different sizes, pin spread is different, stick widths vary and bucket-tip radii are as diverse as the number of brands. That means that, in most cases, a pin-grabber-style coupler is machine-specific and will not handle attachments made for other excavator lines.
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