The use of precision bearings and types

Wafangdian spherical roller bearing Bearing authors for you on June 21, the use and type of precision bearing the use and type of precision bearing, cylindrical roller bearing hydrostatic bearing is a kind of oil supply pressure, outer hydrostatic bearing oil film within the bearing in order to realize the lubrication of the sliding bearing. Hydrostatic bearing from start to stop work under lubrication, so there is no wear and tear, long service life, low starting power; In addition, the bearing has high precision, rotating oil film stiffness big, inhibit oil film oscillation, etc. Precision cylindrical roller bearing has good radial bearing capacity, and the adoption of precision bearings, rotary table rotation accuracy can be guaranteed. The use and type of precision spherical roller bearing cylindrical roller bearing the design of the rotary table can withstand high axial force, some of the artifacts weigh more than 200 tons, more than 10 m turntable diameter. But this kind of design also has some disadvantages, because of the hydrostatic bearing must comes with a set of special oil supply system to supply pressure oil, maintenance is more complex, and cost is high. The use of precision bearing and type: cross roller bearing cross roller bearing in the application of turntable is common. Cross in the characteristic of roller bearing is a bearing has two race, two rows of roller of cross array. Compared with traditional radial centering bearing thrust bearing combination, cross roller bearing structure is compact, small size, and simplify the table design, so as to reduce the cost of the turntable. Thanks to the optimization of pre-tightening force, this kind of bearing has the very high stiffness, and stiffness and precision of the turntable are secured. Thanks to two cross roller bearing design, the effective span can be significantly improved, so this kind of bearing has a high resistance to overturning moment. In the cross roller bearing is divided into two types: the first is a cylindrical cross roller bearing, the second is tapered cross roller bearings. Usually, cylindrical cross roller bearing cross price cone roller bearing is low, suitable for application of rotary table speed is relatively low; Cross roller bearing and cone adopted pure rolling taper roller design, with high precision and speed capability, reduce the axial length and the advantages of the processing cost. Cross roller bearings are suitable for various types of vertical or horizontal boring machine, as well as the vertical mill, vertical lathe and large gear milling machine and other applications. The use and type of precision bearing the place on put together is narrated, in order to choose appropriate size and type of bearings, need comprehensive consideration of various conditions, such as speed, lubrication, installation type, such as spindle rigidity, accuracy requirements. In terms of the bearing itself, only fully understand the design characteristics and the advantages and disadvantages of the resulting, in order to give full play to the performance of the bearing. Bearing as the core component of machine tool spindle and turntable, played a significant role in the operation of the machine tool performance. Bearing comfortable and durable, )