- Luffing: this is vertical movement, stacker uses hydraulic cylinder to control the boom conveyor up and down.
- Travelling: stacker moves on a rail track, which may be broad or narrow gauge, enabling it to move along the stockyard as required. For this purpose, 3 in 1 (motor, gearbox, brake) driving unit are used in long traveling system of stacker.
- Slewing: this is rotation of the stacker around its central axis to align or place the stockpile where required. This works mostly by a slew pinion that rotates around a slew base. This type of gear assembly is called a sun and planet gear.
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A stacker has three basic movements: -
Bucket wheel stacker and reclaimers uses "bucket wheels" to remove material from the pile they are reclaiming. It be assembled differently based on the required reclaiming load rate and boom length. These changes are made in order to accommodate for the associated fluctuations in flow rates and load patterns. In the event of high material flow rates, a combination of a boom and bucket wheel is used. -
Circular Top Stacker Side Scraper Reclaimer is a machine used indoor in a circular stockyard. This machine, distinguishing itself by such features as eco-friendly performance and large storage capacity, now becomes a popular choice of applications in industries like coal mines, coal chemical sectors, iron ore mines and power plants.