LEXICONMachine components
Digging bucket
Also called: Excavator bucket, trenching bucket
The primary excavator attachment: a fabricated steel shell with a reinforced lip, wear strips and replaceable teeth, sized by capacity in cubic metres and by the material it is intended to dig.
What it does
A bucket has to break ground, hold material through a swing and release it cleanly, which pulls its geometry in three directions at once. The shell is rolled plate; the lip is thick abrasion-resistant steel; side cutters and wear strips protect the corners and base, since those see the most abrasion. Capacity is rated in cubic metres, and profiles differ sharply by task — narrow trenching buckets, wide grading buckets without teeth, rock buckets with heavier armour.
Why it becomes an object
The bucket is the part of the machine that meets the ground, so it accumulates the most legible history of anything on site. Wear strips are consumed and replaced, teeth are changed many times over a bucket's life, and the shell deforms slightly from impacts nobody recorded. Retirement follows cracking at the lip or a shell worn through. What survives is a hollow form with an interior — genuinely unusual among salvaged components, most of which are solid or open.
