Bearing is an important part of contemporary mechanical equipment, its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different friction properties of moving components, bearings can be divided into rolling bearings and plain bearings. Among them, rolling bearings have been standardized and serialized, but compared with plain bearings, its radial size, vibration and noise are larger, and the price is also higher. Best micro bearing small series to teach how to buy bearings?
1, bearing type selection
The bearing type is generally selected by the user's technical personnel according to the use conditions and load of the supporting products.
2. Selection of bearing clearance
When the user buys the bearing, he will generally only be told in what type and grade, and rarely put forward requirements for the bearing clearance. The business personnel must ask the service conditions of the bearing, including the bearing speed, temperature and match tolerance, which are directly related to the selection of the bearing clearance.
3, the choice of grease
The selection of grease is generally based on the bearing speed, temperature resistance, noise requirements and starting torque and other aspects of the selection, requiring business personnel to understand the performance of various oils.
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4, bearing seal type selection
Bearing lubrication can be divided into oil lubrication and grease lubrication. Oil-lubricated bearings are generally selected as form bearings, and grease lubricated bearings are generally sealed with dust caps or rubber seals. The dust cover is suitable for high temperature or good environment. The sealing parts are in contact with each other.
Whether the bearing is installed correctly affects the accuracy, life and performance. Therefore, the design and assembly department should fully study the installation of bearings. It is expected to be installed according to operating standards. The items of operating standards are usually as follows:
1. Clean bearings and bearing related parts
2. Check the size and finishing of the related parts
3. Installation
4. Check the bearing after installation
5. Supply lubricant