Analysis of the precautions for bearing selection

Source: Bearing network time: 2013-12-12

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[Daily reading] The demand for shopping malls of various mechanical equipments and instruments using 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; Demand is studied from various viewpoints. When selecting bearings; usually; thinking about the bearing placement, installation, ease of disassembly, the space, scale and bearing of the bearing as the shafting; Layout. Secondly, one side compares the lifespan of various machines using bearings and the different endurance limits of bearings; while determining the bearing scale. When selecting bearings, it tends to only consider the fatigue life of bearings; Smooth fat life, abrasion, noise, etc., which are caused by smooth fat aging, are also in need of research. In addition, according to different uses; it is necessary to select the requirements for precision, clearance, cage layout, smooth grease, etc. Uniquely depicted bearings. However, there are no necessary orders and rules for selecting bearings; priority should be given to the conditions and functions required for bearings. The most matters of stakeholders; especially 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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