This standard applies to hydraulically operated backhoes (see SAE J49). This standard describes a uniform "over end" and "full swing arc" lifting capacity rating for backhoes. It is based on the actual capacity of the machine to lift and support a load under stable conditions. Rated lift capacities will be specified for both the boom and the dipperstick and will be shown on a lift capacity chart (see Fig. 1).
The standard is being balloted to be stabilized. The standards content is useful, has not changed, and is still used to determining lift capacity ratings for hydraulically operated backhoes. No revisions or editorial changes have been identified.