We call it the "plum blossom roller" – because its three‑, four‑, or five‑lobed wheel really does look like flower petals. But why not make it round?
A round wheel only rolls. It doesn't strike.
If it were round, it'd be just a static roller – relying on dead weight to flatten the ground. A 20‑ton static roller compacts only 0.2 to 0.4 meters deep.
The non‑round shape is what delivers the punch.
As the tractor pulls the roller forward, its center of gravity constantly rises and falls:
Rises → stores potential energy.
Drops → unleashes it as a powerful impact.
That impact is over 10 times the machine's own weight. A 12‑ton roller delivers 200 to 300 tons of instantaneous force.
Three lobes vs. five?
Three‑lobe delivers the hardest impact – ideal for deep compaction and high‑fill road bases.
Five‑lobe is gentler – also effective for breaking old concrete pavement, with more edges for higher breaking efficiency.
