casing
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/D%C3%BCrer-Hieronymus-im-Geh%C3%A4us.jpg/220px-D%C3%BCrer-Hieronymus-im-Geh%C3%A4us.jpg)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/Gehaeuse01.jpg/220px-Gehaeuse01.jpg)
A housing is a solid shell that surrounds sensitive content in a protective manner, or protects the environment from dangerous content.
In the late Middle Ages, housing (a collective formation for “ house ”) was still called “hut”, “shack”, “hermitage”, but changed to today's meaning in the 15th to 16th centuries, for example in
In technology there are housings for components , assemblies and devices. The housing often has other functions in addition to protection. For example, the housings of gearboxes are usually structural parts that hold the shaft bearings . The mounting points for installation are also located on the housings. Sometimes housings are only used for aesthetic reasons. Dispensing with an additional load-bearing structure reduces the weight, the number of parts, the assembly effort and thus also the costs.