Stacker Reclaimer

Stacker Reclaimer

stackerA stacker is a large machine used in bulk material handling. Its function is to pile bulk material such as limestone, ores and cereals on to a stockpile. A reclaimer can be used to recover the material.

Gold dredges in Alaska had a stacker that was a fixed part of the dredge. It carried over-size material to the tailings pile.

Stackers are nominally rated for capacity in tonnes per hour (tph). They normally travel on a rail between stockpiles in the stockyard. A stacker can usually move in at least two directions: horizontally along the rail and vertically by luffing (raising and lowering) its boom. Luffing of the boom minimises dust by reducing the distance that material such as coal needs to fall to the top of the stockpile. The boom is luffed upwards as the height of the stockpile increases. Some stackers can rotate the boom. This allows a single stacker to form two stockpiles, one on either side of the conveyor.



Time saving in hard-to-reach positions

MAC offers split bearings which combine all the features of conventional solid roller bearings with the added benefit of being easily assembled around a shaft. The complete assembly, being engineered and manufactured in halves, allows for the installation and inspection of the bearings without disrupting other elements of the machinery. Equipment design can be focused on objectives without having to accommodate bearing types, drive systems, couplings, gears, etc., during bearing inspections or maintenance.

Standard straight shafting can be used, eliminating the need for special shaft designs and tooling, press fits, etc. as often associated with solid bearings. Unnecessary damage to adjacent equipment via removal / replacement, and time-consuming re-alignment of machinery is greatly reduced or eliminated, as positioning of couplings, motors, gear boxes, etc., is not disturbed

  • Manufacturing technology and expertise for maximum reliability
  • Engineered for modified ISO life (L10mh) > 20000 h
  • Up to 780 mm outer diameter • Safety factor (S0 ) > 3