實木家具

It is known to aslide bearingll that bearings have a wide application in automobiles。 Their usage is from the engine， chassis to the electrical assembly。 Generally， automotive bearings are divided into two categories， i。e。 sliding bearings and rolling bearings。

The first category is mainly applied in engines。 They can be future divided into two categories。 One is the thin-walled bearing which is commonly known as bearing bush， the other is the bushing which is also known as copper bush。 The former is mainly used for supporting the engine crankshaft and connecting rods。 And the latter is mainly used for supporting the camshaft shaft neck and piston pin。 Moreover， they can also be applied in other parts of automobile such as steering knuckle bushings of the chassis， gear bushing and motor hub， etc。

The second category can be widely used in all mechanical and electrical assembly of automobiles。 There are main transmission， diverter， water pump， fans， clutch， differential mechanism， front and rear wheels and drive shaft， etc。

Rolling bearing has two types。 Those are ball bearings and roller bearings。 According to the loads and directions， it can also be divided into radial bearing and thrust bearing。 The former type can be used to bear the radial (perpendicular to the axis line) load， while the latter can be used to axial (parallel to the axis line) load。 And the radial thrust bearings can bear both thePlastic bearing radial and axial load at the same time。 They can be applied in various parts of automobiles due to different functions。

Transmission shaft is generally supported at both ends。 Usually， there is a fixed side bearing at one side to bear both the radial and axial load。 It can fix the axial displacement between the fixed shaft and gearboxes。 The other side of the bearing is called free side bearing which can only bear the radial load。 Relative axial movement can be achieved to solve problems resulted from the operation of transmission gears and the errors generated during installation。