The choice of clearance for ceramic bearings is to achieve better operational performance and lifespan under different working conditions. Clearance is the internal clearance or interval of a bearing, used to compensate for deformation and changes caused by factors such as thermal expansion and contraction, assembly errors, and working loads.
When selecting the clearance of ceramic bearings, the following factors need to be considered:
1. Bearing type and working conditions: Different types of ceramic bearings differ in the selection of clearance. According to the type of bearing and specific working conditions, such as speed, load, temperature, etc., the appropriate clearance can be selected by referring to the technical data and guidelines of ceramic bearing manufacturers.
2. Pressure and preload: If there are large radial or axial loads in the application, preload may be necessary. Pre loading is achieved through the design and assembly of internal components of ceramic bearings, which can improve the stiffness and operational accuracy of the bearings. In this case, the selection of clearance may be affected by the preload requirements.
3. Operating temperature: Ceramic bearings may experience thermal expansion and contraction under high temperature conditions, especially for the fit clearance between the ceramic shaft and bearing seat. In high-temperature applications, it is necessary to select appropriate clearance to allow thermal expansion and contraction, while ensuring good bearing performance is maintained within the normal operating temperature range.
4. Noise and vibration: The selection of clearance can also have an impact on the noise and vibration of ceramic bearings. A smaller clearance may reduce vibration and noise, but it may affect the reliability and durability of the bearing. When selecting clearance, it is necessary to weigh it according to the specific application requirements.Taking into account the above factors and referring to the manufacturer's recommendations can help select ceramic bearing clearances suitable for specific applications. If necessary, it is recommended to consult relevant technical engineers or contact ceramic bearing manufacturers for more specific guidance and advice.
