Here's a simple analysis:
First, the size limit.

  The installed space of SKF bearings usually is restricted. In most cases, the shaft (or SKF bearing diameter) is based on mechanical design or other design limitations. Therefore, SKF Bearing type and size selection is based on SKF bearings diameter of the decision.Thus, the standard SKF bearings are the main dimensions table diameter size according to international standards prepared.

Size standard SKF bearings in many forms, preferably in mechanical devices designed to use standard SKF bearings (SKF bearing this design to the ease of procurement, where you tell the way, SKF Bearing catalog on some models do have, but some Non-standard SKF bearings in mainland China not in stock, futures will be a long time sometimes, so the selection of the SKF bearing the cost and time to consider the latter part of the cost of replacement) SKF bearing the load applied to the SKF bearing on the load, the nature, size, direction is changing. Typically, the basic load ratings are shown in table size.However, the axial load and radial load, etc., also select the appropriate SKF bearing important factor. SKF ball and roller bearings when the size of a considerable time, SKF needle roller bearings usually have a higher load capacity and withstand greater vibration and shock loading.

Second is speed.

Permissible speed is based on SKF bearing type, size, precision, cage type, load, lubrication, cooling method and other factors identified. SKF Bearing accuracy table lists the standard SKF bearings in oil lubrication and grease lubrication of the allowed speed. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high speed applications.

Once again, SKF bearing tolerances.

SKF bearing size precision and rotational accuracy is based on ISO and JIS standards.For applications requiring high precision and high speed machinery, recommended five or more precision SKF bearings, deep groove ball bearings, angular contact ball bearings or cylindrical roller bearings are suitable for high precision mechanical operation. Rigidity, when the SKF rolling bearings and roller contact surface pressure, will produce elastic deformation. Some machines need to minimize elastic deformation. Than ball bearings roller bearings have a small elastic deformation.

In addition, in some cases, SKF bearings to preload to increase rigidity. This process typically used for deep groove ball bearings, angular contact ball bearings and tapered roller bearing inner ring offset, shaft bending, or SKF bearing box shaft tolerance changes, inside and outside the circle with the error will lead to the eccentric. To prevent the eccentric angle is too large, self-aligning ball bearing, self-aligning roller bearings SF, or self-aligning bearing is the better choice. Voice frequency and torque, bearing standards are based on high-precision manufacturing, so the voice and the torque is small. Deep groove ball bearings and cylindrical roller bearings are suitable for low voice, low-torque applications with special requirements.

Installation and removal, some applications require frequent removal and installation, to ensure regular testing and maintenance. Can be installed inside and outside the ring, such as SKF bearings: cylindrical bearings, needle bearings, and tapered bearings are available for this occasion. Cone hole of auto-aligning ball bearings and roller bearings self-aligning with the help of the sleeve, also simplifies the installation process.