2022/01/20
Influence of incorrect installation on bearing life of miniature bearing
Bearings are precision parts, installation and use should keep the surrounding clean, pay attention to the compatibility of matching products, bearing installation is correct, directly affect the accuracy, life and performance of bearings when used.
详细介绍：
Precautions for installation and use of rolling bearings Rolling bearings are precision components and should be used with great caution. Even high quality bearings, if used improperly, will not get the desired effect. (1) Keep the bearing and its surrounding environment clean. Even the tiny dust that cannot be seen by the naked eye will have an adverse effect on the bearing. So, keep the surrounding clean, so that dust will not invade. (2) Use carefully and carefully to give the bearing a strong impact during use, which will produce scars or pressure and induce accidents. When serious, it will cause cracks and fractures, which must be paid attention to. (3) The use of special bearing tools must use special tools, can not be replaced at will. (4) Avoid bearing rust When operating bearings, hand sweat will cause rust. Be careful to use clean hands, wear gloves as far as possible, away from corrosive gases. Whether the installation of the bearing is correct directly affects the accuracy, life and performance of the bearing when used. Therefore, the design and assembly department should fully study the installation of bearings in accordance with the operating standards. The standard operation items are usually as follows: (1) cleaning bearings and related parts (2) checking the size and accuracy of related parts (3) installation (4) Inspection of bearings after installation (5) Filling lubricants It is hoped that the bearing packaging will be opened during installation. General grease lubrication, do not clean the bearing, directly fill the grease. When oil is lubricated, it is generally not necessary to clean, but instruments or high-speed bearings should be cleaned with clean oil to remove the anti-rust agent coated on the bearing. The bearing with the rust inhibitor removed is easy to rust, so it can not be placed at will. In addition, the micro-bearing that has been sealed in grease can be used directly without cleaning. The installation method of the bearing varies according to the bearing structure, fit and condition, and the inner ring needs interference fit because it is generally rotated by the shaft. Cylindrical hole bearings, multi-purpose press into, or hot loading method. In the case of cone holes, it is directly fixed on the cone shaft, or installed with a tight set. When installed to the bearing seat, the gap is used, and when the outer ring has interference, it is usually pressed into the press, or the cold shrinkage method is installed after cooling. For ice as a coolant, cold shrinkage installation, the air moisture will condense on the surface of the bearing. So we need to take anti-rust measures.
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