SternLakai´s -HeavyMetal- Travel Bug

Herumreisen um so viele Kilometer wie möglich zu meistern....
Bitte klau mich nicht. =)
Log deinen Besuch und bring mich zu einem neuen Geocache


Travel around the world to get many milles.
Please do not keep me. =)
Log your visit, and move me to a new Geocache!

Aus Wikipedia:
Wälzlager sind Lager, bei denen zwei zueinander bewegliche Komponenten, der sogenannte Innenring sowie der Außenring, durch rollende Körper getrennt sind. Sie dienen als Fest- oder Loslager zur Fixierung von Achsen und Wellen, wobei sie die radialen und axialen Kräfte aufnehmen und gleichzeitig die Rotation der Welle oder der so auf einer Achse gelagerten Bauteile (z.B. ein Rad) ermöglichen. Dabei soll die Reibung und somit die Verlustleistung und der Verschleiß möglichst gering bleiben. [1] Zwischen den drei Hauptkomponenten Innenring, Außenring und Wälzkörper tritt hauptsächlich Rollreibung auf. Da die Wälzkörper im Innen- und Außenring auf gehärteten Stahlflächen mit optimierter Schmierung abrollen, ist die Rollreibung dieser Lager relativ gering.

From Wikipedia:
A rolling-element bearing is a bearing which carries a load by placing round elements between the two pieces. The relative motion of the pieces causes the round elements to roll with very little rolling resistance and with little sliding.

One of the earliest and best-known rolling-element bearings are sets of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls on to it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See "bearings" for more on the historical development of bearings.

A rolling-element rotary bearing uses a shaft in a much larger hole, and cylinders called "rollers" tightly fill the space between the shaft and hole. As the shaft turns, each roller acts as the logs in the above example. However, since the bearing is round, the rollers never fall out from under the load.

Rolling-element bearings have the advantage of a good tradeoff between cost, size, weight, carrying capacity, durability, accuracy, friction, and so on. Other bearing designs are often better on one specific attribute, but worse in most other attributes, although fluid bearings can sometimes simultaneously outperform on carrying capacity, durability, accuracy, friction, rotation rate and sometimes cost. Only plain bearings are used as widely as rolling-element bearings.