In mechanical engineering, a rolling-element beari...

top sets logs back item load cost size shaft races front table balls years marine ground weight rollers pencils concept accuracy products earliest advantage thousands cylinders durability automotive industrial larger hole Renaissance seventeenth Middle Ages Roman times several pens above example rotation rate plain bearings good trade-off fluid bearings primitive form great necessity firm foundation rolling bearing relative motion rolling elements large stone block modern technology carrying capacity Leonardo da Vinci long inactive period eighteenth centuries Other bearing designs most other attributes mechanical engineering historical development one specific attribute aerospace applications rolling-element bearing rolling element bearing little sliding friction little rolling resistance Common mechanical components two concentric, grooved rings rolling element rotary bearing