Bearing types in which the mounting space of rolling bearings can fit in the mounting space of SKF bearings generally determine the shaft diameter, that is, the bearing bore diameter, when designing the shaft system to pay attention to the rigidity and strength of the shaft. However, rolling bearings come in a variety of size series and types, from which the most suitable bearing type should be selected.
Rotational accuracy Rolling bearing types with the required rotational accuracy Machine tool spindles, gas turbines and control machines require high rotational accuracy, high speed and low friction respectively, and bearings with accuracy above class 5 should be used.
1. Keep the bearing and its surroundings clean. There are many cold and hot processing processes.
2. Careful and careful use: if the SKF bearing is carelessly used to have a strong impact, the bearing will be damaged, indented, fractured and other injuries.
3. Use the right tools. For example, cold and hot forming properties, machining properties, hardenability, etc.
4. Pay attention to the anti-rust of the bearing. Use in wet places should be avoided, and gloves should be worn to avoid sweat.
5. The user should be familiar with the bearing. In the production process of SKF bearing parts, in order to meet the requirements of high volume, high efficiency and high quality, bearing steel should have good processing performance.
Under the action of periodic loads, SKF bearings are prone to fatigue failure, that is, cracking and spalling, which is the main form of bearing damage. Therefore, in order to increase the service life of the bearing, the bearing steel must have a high contact fatigue strength. When SKF bearings are in operation, not only rolling friction occurs between rings, rolling elements and cages, but also sliding friction, resulting in constant wear of bearing parts. In order to reduce the wear of bearing parts, maintain bearing accuracy and stability, and prolong service life, bearing steel should have good wear resistance.
6. Formulate operating specifications for the use of bearings: 1), storage of bearings 2), cleaning of bearings and their surroundings 3), inspection of the size and processing quality of the installation part 4), installation operation 5), inspection after installation 6), disassembly operation 7), maintenance (regular inspection) 8) Lubricant supplementation
The size, direction and nature of the load of the rolling bearing bearing load vary widely, such as the magnitude of the load, whether there is only a radial load, whether the axial load is unidirectional or bidirectional, the degree of vibration or shock, and so on. After considering these factors, it is time to select the most suitable SKF bearing type. In order to prevent bearing parts and finished products from being corroded and rusted during processing, storage and use, bearing steel is required to have good rust resistance.
Analysis of the relative inclination of the inner and outer rings causes the bearing inner and outer rings to be tilted relative to each other and selects the type of bearing that can be adapted to this operating condition. If the relative tilt of the inner and outer rings is too large, SKF bearings can cause damage due to internal loads. Therefore, a bearing type that can withstand this tilt should be selected.
The limiting speed of bearings whose speed can adapt to mechanical speed is not only determined by the bearing type but also limited to bearing size, cage type, accuracy class, load conditions and lubrication method, so these factors must be considered when choosing. The following rolling bearings are mostly used for high-speed rotation: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings.
