Bucket wheel excavators are used for mining
large volumes of soil, coal
. Most bucket wheel excavators are currently sold with noise control
in the cabs, and older units can be retrofit
with noise control as needed.
A bucket wheel's payload is dependent on many factors including bucket size, shape, curl force
and fill factor
for the material being excavated. Fill factors are determined by the bucket penetration and profile, the breakout force
, and it's rackback angle
(the rackback angle determines material retention). The material being excavated can range from 100% for sandy clay to 40% for poorly blasted rock. The demands of an excavator can vary from 5k cubic yd., to as much as 40k cubic yd. per day.
Bucket types include trenching standard duty
, heavy duty
, road building
or pipe lining
, and light material ditch cleaning. Bucket wheel excavators now carry up to 2 x 500 kW
power and range in price from $30,000 to $80,000 in U.S. dollars.
Compact bucket-wheel excavators are made of ridged structure and low weight and are useful for continuous opencast mining
, in addition to working on water canal or highway digging.
To view a bucket wheel excavator see: