The Demag BL323 was the last universal excavator manufactured by DEMAG in their Duesseldorf construction plant. Originally conceived as B323 in 1954, the later model underwent a series of improvements and enhancements, the most notable of which was the switch from purely mechanical control to a Westinghouse air pressure control system. Over the years the following enhancements were made:
- The original Modag (Motorenwerke Darmstadt AG) engine was replaced with a 12 cylinder 4 stroke engine manufactured by Deutz.
- The excavator was finally equipped with a torque converter, manufactured by TwinDisc.
The BL323 was the last true universal excavator manufactured by Demag, i.e. it could be equipped with a face shovel, a back hoe and a boom to work with clam shell, drag line and as a crane.
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