Bearing the load size, direction and nature

The most important factor of load is bearing. In child bearing because is line contact, carrying capacity is big, comfortable son bear big load; Because is point contact ball bearing, bearing capacity is small, suitable for light, medium load; Carbon steel manufacturing or body bearing to the fire, can withstand shock and vibration load. All kinds of bearing load capacity with rated load is commonly said. In terms of the direction, to tie the rope radial load, when can choose deep ball bearings, circular fluid axial needle roller bearing. Small pure axial load, can choose the thrust ball bearings; Under high pure axial load, can choose thrust roller bearings. When load bearing radial and axial, angular contact ball bearing is generally selected or taper roller bearing. 3. Of bearing performance when the centerline of shaft and bearing seat centerline, Angle error, or because of the axis of two bearing span larger axial rigidity is small, easily bend or tilt, can choose good self-aligning properties of self-aligning ball bearings or spherical roller bearings, insert ball bearing units and, this kind of bearing in shaft bent slightly tilted or circumstances, to maintain a normal work. Shaft bearing self-aligning performance is good or bad, rather than allow no alignment, allowing the misalignment of the greater the degree of value, self-aligning performance better. Insert ball bearing units mentioned above is usually says outer spherical bearing, is called ball bearings because it transferred to belong to the deep groove ball bearings, roller for steel ball inside, outside the spherical ball bearing is deep groove ball bearing is convenient to use, its characteristic mainly for loading and unloading of simple, can be adjustable. 4. Rigid bearing stiffness, bearing refers to the force bearing unit deformation need size. The elastic deformation of rolling bearings is very small, can not be considered in most of the machinery. But in some of the machinery, such as spindle, bearing rigidity is an important factor that should be generally choose cylindrical or tapered roller bearings. Because of these two kinds of bearing under the load, the rolling element and raceway surface contact, good rigidity. In addition, all kinds of bearing can also through the preloaded, achieve the goal of increasing bearing rigidity. Such as angular contact ball bearing and circular cone roller bearings, to prevent the vibration of the shaft, increase the bearing rigidity, often impose certain axial force in advance when installation, make its mutual pressure. Noted here that the amount is too large. Is too large, will make bearing friction increases, high temperature increase, affect the service life of bearing.