Bearing type selected

When you select the bearing type, complete control of the conditions of the bearing it is critical. The following table lists the main analysis items: Selection Method
1) mounting space can be accommodated in the bearing stiffness and strength of the bearing type turbocharger bearings installation space due to the focus on the design of the shaft axis, it is generally to determine the shaft, namely bearing diameter. But Rolling a variety of sizes and types of series, should choose the most suitable bearing type.
2) Load bearing load size, direction and nature [load bearing capacity with basic rated load, said its value in the bearing dimensions table] bearing loads full of changes, such as size of the load, if only radial load, axial load one-way or two-way, and so the degree of vibration or shock. After considering these factors, again select the most suitable bearing type. In general, the radial load bearing capacity of the same diameter increasing in the following order: deep groove ball bearings <angular contact ball bearings <cylindrical roller bearings <tapered roller bearings <Spherical Roller Bearings
3) Speed ​​can adapt to mechanical speed bearing type [bearing the speed limit value of the reference speed limit represented by its value in the bearing dimensions table] bearing not only on the speed limit on the bearing type is also limited bearing size, cage type, precision grade , load conditions and lubrication methods, therefore, must consider these factors in selection. The following are mostly used for high speed rotating bearings: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings
4) having a bearing type rotary precision desired rotational accuracy [dimensional accuracy and rotational accuracy of the bearing GB has been standardized by bearing type] spindle, gas turbines and control machines were high rotational accuracy, high speed and low friction, this It should be used when more than five Wind turbine bearing. Generally, use the following bearings: deep groove ball bearings, contact ball bearings, cylindrical roller bearings
5) Just the performance required to meet the mechanical rigidity of the bearing shaft type [when the bearing load, the contact portion of the rolling element and raceway will produce elastic deformation. "High rigidity" means a small amount of deformation that the elastic deformation] at the site of the final stage of spindle and auto deceleration devices, to improve the rigidity of the shaft, it is also necessary to increase the rigidity of the bearing. Roller bearing deformation under load than ball bearings born small. Bearing preload (negative clearance) can be improved rigidity. This method is suitable for angular contact ball bearings and tapered roller bearings.
6) is inclined relative to the inner and outer rings of the bearing inner ring and the outer ring analysis produced relative inclination factors (such as poor accuracy deflection or misalignment, shaft and housing caused by the load axis), and can adapt to this selection Conditions of bearing types. If the inner and outer rings relative inclination is too large, the bearing internal load generated due to damage. It should choose this type of bearing can withstand inclined. In general, it allows the tilt angle (or aligning angle) increasing in the following order: Cylindrical roller bearings, tapered roller bearings, deep groove ball bearings (angular contact ball bearing), spherical roller (ball) bearings
7) Installation and removal of detachable regular inspection frequency and disassembly methods dismantle frequent use separable inner and outer rings of cylindrical roller bearings, needle roller bearings and tapered roller bearings more convenient. Tapered hole aligning ball bearings and tapered bore spherical roller bearings through the use of fasteners or withdrawal sleeves can be easy assembly and disassembly. Selected mechanical type bearing structure is not the same, there will be differences in the conditions of use of the bearing, its performance requirements vary, but in general, the use of an axle bearing not less than two. Moreover, in order to facilitate the axial positioning, the use of a bearing is used mostly fixed end bearing, and the rest as a free end bearings. The following table lists select a fixed end and the free end of the bearing structure. Applies the bearing type fixed-side bearing for the bearing axial positioning and fixing selection both radial and axial load bearing to withstand axial load, install also be required to consider the appropriate size of the axial load strength .