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Homemade Rock Crusher Small

The rock crusher mounts on a metal frame and is powered by a 2 hp electric motor. The motor chain-drives a shaft that in turn drives a belt that loops around the rock-crushing drum causing it to rotate at about 60 rpms. The drum consists of a 1-ft. length of 21-in. dia. steel pipe with both ends welded shut with 38-in. thick steel plate.

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