First, limit of bearing size.
SKF bearings can usually install space is restricted. In most cases, the shaft diameter (or bearing diameter) is based on the mechanical design or other design constraints. Selection of bearing type and size is determined by diameter of SKF bearings. Thus, Standard SKF bearings for main dimension tables are prepared in accordance with international standards for dimension of inner diameter.
Standard SKF bearing of size forms range, in machinery device design Shi best used standard bearing (this design to bearing whether easy procurement, in here on said sentence questions way, some bearing type recorded Shang of model does has, but some non-marked bearing in China continent area no spot, some when futures will is long time, so in bearing selection Shi to consider time cost and late replaced of cost) bearing of load, imposed in SKF bearing Shang of load, its nature, and size, and direction is changeable of. Typically, the basic load rating are displayed in the dimension table. Axial and radial loads, and so on, are also important factor is selecting the right bearing. When when the size of the ball and needle bearing, needle roller bearings typically have high levels of vibration and shock loads and withstand greater load capacity.
Second, speed of the bearing.
Allowed speed is based on the SKF bearing type, size, precision, cage type, load, lubrication, and cooling factors to determine. SKF bearing table lists the standard precision bearings under oil lubrication and grease lubrication allows speeds. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high speed operation of the occasion.
Third, bearing tolerances.
Bearing size and rotation precision is according to ISO and JIS Standards. That require high-precision and high-speed operation of the machinery, grade 5 or above is recommended precision bearings, deep groove ball bearings, radial ball bearings or cylindrical roller thrust bearings are suitable for high running accuracy of machinery. Stiffness when SKF bearing rolling elements and raceways-contact surface pressure will generate elastic deformation. Some machines need to keep to a minimum the elastic deformation. Roller bearings are smaller than the elastic deformation of ball bearings.



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