Typically, the two double row tapered roller bearing radial and axial support, and is called the fixed side of the bearing end bearings, which bear both radial and axial loads fixed shaft type and relative bearing housing the axial displacement. Known as the free end of the other side, the only bear radial load, axial relative movement can be. Fixed end double row tapered roller bearings must be compared with the fixed shaft and bearing box, more suitable bearing can bear, but the installation must maintain a certain radial bearing housing interval. Due to changes in the thermal axial length expansion of the free end of koyo bearing, double row tapered roller bearings squeeze does not happen within. Axial displacement occurs in the bearing rings, may also occur with the bearing in the bearing.
koyo bearing on the fundamental properties of materials requirements depend on the operating characteristics of the double row tapered roller bearings are. Generally, the bearing steel should have the following properties:
1 high contact fatigue strength.
2 high wear resistance.
3 high elastic limit and yield strength.
4 high and uniform hardness.
5. certain impact toughness.
6 good dimensional stability.
7 good corrosion performance.
8 good process performance.
For the special conditions of work double row tapered roller bearing materials, according to their specific requirements should also have special properties adapted to their condition, such as: high temperature, low temperature resistance, corrosion resistance, anti-radiation, anti-magnetic properties.