Cast stone idler can be used as a transmission component for belt conveyors in mines, metallurgy, ports and other applications; the dataset includes major raw and auxiliary materials and energy used in the production process, but does not include infrastructure such as production equipment and factory construction within the system boundary; the life cycle inventory is compiled from data collected from multiple sources; the manufacturing process of cast stone idlers includes raw material screening, mixing and heating melting, mold forming, cooling, finishing, assembly of bearings, retaining rings and oil seals, inspection, and packaging.