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Key analysis of bearing selection
Source: China Bearing Network Time: 2018-01-22
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The demand for shopping malls using various mechanical equipment and instruments for rolling bearings is becoming more and more stringent; the conditions and functions required for bearings are becoming increasingly diversified. In order to be able to select the most suitable bearings from a large number of layouts and scales; A kind of viewpoint research. When selecting a bearing; usually; thinking about bearing placement, installation, ease of disassembly, bearing space, scale and bearing mallarity of the bearing; roughly determining the bearing layout. Secondly; On the one hand, we will discuss the various life-threatening limits of the various bearings used in bearings and the different endurance limits of the bearings; while determining the bearing scale. When selecting the bearings; tend to only consider the fatigue life of the bearings; The smooth fat life, wear, noise, etc. of the attack also need to be fully discussed. Again; based on different uses; it is necessary to select the requirements for precision, clearance, cage layout, smooth grease, etc.; However, there are no necessary orders and rules for selecting bearings; the priority should be considered for the conditions, functions, and most relevant requirements for bearings. Term; particularly practice.
â—‹ Conditions and functions required for the bearing â—‹ Operating conditions and environmental conditions â—‹ Some dimensions of the bearing device â—‹ The space that the bearing agrees â—‹ The size of the load, the direction â—‹ oscillation, the impact â—‹ The rotational speed, the limit speed of the bearing â—‹ The inner ring, the outer The skew of the circle â—‹ The fixing of the axial direction and the bearing arrangement â—‹ The difficulty of loading and unloading â—‹ Noise, torque â—‹ Rigid â—‹ Shopping mall, economy, bearing layout, placement â—‹ Use of machinery and drawing life â—‹ equivalent dynamic load or equivalent static load â—‹ Rotation speed â—‹ Allow static load factor â—‹ Accept axial load (in the case of cylindrical roller bearings)
Resolution bearing scale â—‹ Rotational vibrating accuracy â—‹ High-speed rotation â—‹ Torque change resolution Bearing accuracy level â—‹ Cooperation â—‹ Temperature difference between inner ring and outer ring â—‹ Rotation speed â—‹ Deflection of inner ring and outer ring â—‹ Pre-pressure amount resolution (internal) Gap â—‹ Rotation speed â—‹ Noise â—‹ Operating temperature resolution cage shape, data â—‹ Operating temperature â—‹ Rotation speed â—‹ Smooth method â—‹ Sealing method â—‹ Protection, repair resolution Smooth method, smoothing agent, sealing method â—‹ Loading and unloading order â—‹ Work card mold â—‹ and device Relevant scale resolution and device-related scale resolution loading and unloading methods
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