What is the purpose of slewing

  Everyone says slewing well in engineering machinery has a great role, but in the end what purpose slewing

It?
Slewing bearing is mainly used in engineering machinery, slewing bearings can bear large axial, radial load, so the engineering machine

Mechanical frequently used. Such as excavators, stackers and reclaimers, graders, rollers, concrete machinery, lifting machinery, industrial

Cheng ship loaders and other places to be widely distributed edible, but also used in medical machinery, light machinery. So slewing

By order of use is very widespread in the machinery, if not less slewing normal use