Wade mine practical guide bearing classification and bearing application

Wade mine practical guide 2020 - bearing classification and bearing application 09 - 21 in engineering machinery engineering machinery bearings in the bearing arrangement, vibration equipment vibration in shaft bearing arrangement needs special attention. Road roller, tamping machine, vibration motor, vibration pile driver and by mechanical vibration of vibrating plate ram. Excitation shaft and eccentric block at high speed. Here, deep groove ball bearings, For small vibration equipment) , spherical roller bearings and cylindrical roller bearings ( N, NU design) Have a successful application. To compensate for misalignment and the deflection of shaft, roller and cylindrical roller bearing inner ring raceway modification according to the logarithmic curve. So, in does not affect the life of the case, if you want more self-aligning ability, cross section shape need to be modified. Bearing steel industry layout, normally in the steel plant rolling mill bearing arrangement need to bear the load of high, and in most cases are very high in working temperature, under the condition of serious environmental pollution. Therefore, in addition to using the standard rolling bearing, also need to use some suitable for the working condition of special bearings. Low converter used in the rolling bearing is not only to support a lot of weight, but also to withstand high impact load. Split or monolithic large spherical roller bearing can meet these requirements. Low on the ladle rotating equipment in the continuous casting production line is supported by large rolling bearing rotating arm. Thrust spherical roller bearings are often used to support the weight, and cylindrical roller bearing to inherit the overturning moment. In the inner side of the driven roller support, using the split roller bearings. In order to protect the bearing from high-temperature steel billet, iron oxide, and the influence of cooling water, bearing the need for water. Seal including chip seal box of labyrinth seal. For the driven roller or the outer edge of the driven roller support, can adopt and bearing. Sealed spherical roller bearings can reduce the consumption of lubricant and reduce the damage to the environment. In order to be able to withstand large radial load on rolling mill, often using double row and four row cylindrical roller bearing, thrust with deep groove ball bearings, angular contact ball bearings, double row taper roller bearings, thrust taper roller bearings or thrust self-aligning roller bearing thrust bearing. If the double row and four row circular cone roller bearings, usually requires no additional thrust bearing. Spherical roller bearings are normally used for axial guidance accuracy is not high and low speeds. Low work roll more choose more row tapered roller bearing with seal, can reduce the loss of lubricant, and the effects on the environment, the pressure on the main shaft adopts thrust tapered roller bearings, due to its low friction, or the small power is needed to adjust. On the bar and wire rod production line of high speed rolling mill are commonly used single row cylindrical roller bearings, single row or double row angular contact ball bearings. Low weight of the heavy rolling mill drive shaft itself is quite large. Previous generally adopted in the design of sliding bearing support. And now, the special design of the split cylindrical roller bearing, so wear phenomenon and the lubricant consumption significantly reduced. Second-ranking mill gear box often use spherical roller bearings. In the new design, shaft support use as floating end bearing, double row cylindrical roller bearings, double row tapered roller bearing as the fixed end bearing arrangement. The arrangement of the shaft in the radial and axial positioning accuracy is quite high. Low split cylindrical roller bearing used in pilger cold-rolling mill on the crankshaft. For the pilger cold-rolling mill work roll bearing arrangement, often use with taper hole and spherical roller bearing with special structure design, the spherical roller bearings can satisfy the pilger cold-rolling mill load cases of special applications. Low multi-roll cold mill rolling bearing arrangement must ensure that the rolling plate has the very high surface quality and even thickness. Multiple row cylindrical roller bearings and tapered roller bearing can be used as a supporting roller bearing to meet these requirements. The underground mining and open pit arrangement used in underground mining and open pit machine needs to be done very hard work. Tunnel excavator drill bit bearing arrangement needs to have a high carrying capacity, usually adopts the cylindrical roller bearing and spherical roller bearings. Weight and the overturning moment to partial load operation by double row cylindrical roller bearings or spherical roller bearings to support. Drilling force is supported by thrust spherical roller bearing. In a large or compact excavators, bit parts of the bearing arrangement is out-of-the-box unit. It includes a double row circular cone roller bearings or a three-ring thrust belt crown gear/centripetal roller bearing. The bearing unit can carry all of the load combination including the axial force and radial force and overturning moment. Effect on the tunnel digger active force on the pinion, entirely by a self-aligning roller bearings and cylindrical roller bearing support. In the material handling and lifting equipment, the main demand is the standardization of various types, different size design bearing. （ Source: ore micro media)