The Selection Skills of Subdivision Bearings and Precautions for Use
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| Time：2016.11.08 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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With the increasing development of mechanical engineering, the demand for bearing industry is also increasing. In the mechanical industry, the use of split bearings has been widely used, because the development of split bearing is growing, varieties are also Increasing, and how to choose the machinery of the use of split bearings, we must understand. The following is a brief bearing on the selection of sub-bearing tips.
1, the bearing model selection: Bearing model is generally determined by the users technical staff under the conditions of use of ancillary products and bear the load on the bearing to choose. Business personnel to understand whether the users actual load is consistent with the selected bearing, if the bearings can not meet the requirements, customers should be recommended as soon as possible re-election models, but unless the special products in the choice of models generally will not have any problems.
2, the choice of bearing clearance: the user in the purchase of bearings will generally inform in what type, grade, very few of the bearing clearance requirements, business personnel must ask the bearing conditions of use, bearing speed, temperature , With the tolerance are directly related to the choice of bearing clearance. Generally 3500 rpm / min speed of the motor mostly using CM clearance, such as high-temperature high-speed motors are required to use a relatively large clearance. Bearing clearance in the assembly after the hole will be due to the rise and the reduction of the outer circle, reducing the amount of clearance = interference × 60% (bearing room is aluminum except). For example, before assembly bearing clearance is 0.01mm, the assembly of interference for the 0.01mm, the bearing assembly after the clearance of 0.004mm. In theory, the bearing zero clearance in the noise and life are the best state, but in actual operation taking into account temperature and other issues, the bearing clearance in the assembly after the 0.002mm-0.004mm better.
3, the choice of bearing seal type: bearing lubrication can be divided into oil lubrication and grease lubrication. Oil-lubricated bearings are generally used in the form of bearings, grease-lubricated bearings generally use dust cover or rubber seal seals. Dust cover for high temperature or the use of good parts of the environment, the seal sub-contact seal and non-contact seal two, contact seal dustproof performance is good but the starting torque, non-connected seal starting torque, but the sealing performance No contact is good.
4, the choice of fat: the choice of grease is generally based on bearing speed, temperature conditions, noise requirements and starting torque and other aspects of choice, requiring business people to understand the performance of a variety of oils and fats.
Of course, the use of bearings in the course of the main bearing of the day-to-day matters, understand the use of these bearings will probably have almost the same, only to understand every aspect of the bearing, so as to better use of bearing efficiency and can Extend bearing life.
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