With a power requirement of up to 30 MW, tube mills belong to the largest driven machines. They crush minerals, ores, coal, or cement clinker by impact and friction until the material is pulverized. The tube mills, which can have a diameter of up to 15 m and a length of up to 20 m, are installed horizontally.
With tube mills, a distinction is made between different drive variants. Siemens particularly specializes in:
- Single pinion drives
- Central drives
- Load sharing girth gear units
For all three variants, Siemens offers the entire drive system: Motor, gear unit, couplings, pinion, and girth gear, as well as auxiliary drive, safety devices, and diagnostic systems.