A clutch is a device for quickly and easily connecting or disconnecting a rotatable shaft and a rotating coaxial shaft，which allows two components，usually drive shafts，to be engaged or disengaged by its operation．Although it is commonly used on motor vehicles there are various types of clutch available for industrial applications．Electromagnetic，dry friction plate，multi-oil immersed plate，centrifugal and vane are just some of the various types of clutch available．

传动器是一个设备为迅速和容易地连接或分开一个可旋转的轴和一个转动的同轴轴，允许二个组分，通常主动轴，由它的操作参与或解开。虽然它是常用的在机动车有传动器的各种各样的类型可利用为工业应用。电磁式，干燥摩擦板材、多油被浸没的板材、离心和翻板是正义的某些传动器的各种各样的类型可利用。