There are many reasons for the failure of forklift bearings. All influencing factors in the design and manufacturing process will be related to the failure of IKO bearings, which is difficult to judge by analysis. In general, it can be considered and analyzed from two aspects: use factors and internal factors.
Basic requirements of IKO plastic bearing for machine tool spindle
Use factors mainly refer to whether the installation, adjustment, use and maintenance, maintenance and repair meet the technical requirements. The installation condition is one of the primary factors in the use factors.
The improper installation of IKO bearing often leads to the change of the stress state between the parts of the whole bearing, and the bearing operates in an abnormal state and fails early.
According to the technical requirements of bearing installation, use, maintenance and repair, monitor and inspect the load, speed, working temperature, vibration, noise and lubrication conditions borne by the running bearing, find out the cause immediately and adjust it to make it return to normal.
In addition, it is also important to analyze and test the quality of grease and the surrounding medium and atmosphere.Basic requirements of IKO plastic bearing for machine tool spindle
Internal factors mainly refer to the three factors that determine the quality of IKO bearing, such as structural design, manufacturing process and material quality.
First of all, the reasonable design and advanced nature of the structure will lead to longer bearing life. The manufacturing of bearings generally goes through multiple processing processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advanced nature and stability of all the processing technologies will also affect the life of bearings.
Among them, the heat treatment and grinding processes that affect the quality of finished IKO bearings are often more directly related to the failure of bearings. In recent years, the research on the metamorphic layer on the working surface of bearing shows that the grinding process is closely related to the surface quality of bearing.
The metallurgical quality of forklift bearing materials was once the main factor affecting the early failure of rolling bearings. With the progress of Metallurgical Technology (such as vacuum degassing of bearing steel), the quality of raw materials has been improved.
The proportion of raw material quality factor in IKO bearing failure analysis has decreased significantly, but it is still one of the main influencing factors of bearing failure. The proper selection of bearing material must still be considered.Basic requirements of IKO plastic bearing for machine tool spindle
The main task of forklift bearing failure analysis is to find out the main factors causing bearing failure according to a large number of background materials, analysis data and failure forms, so as to put forward targeted improvement measures, prolong the service life of IKO bearing and avoid sudden early failure of bearing.Basic requirements of IKO plastic bearing for machine tool spindle
Speed and temperature rise
With the development of science and technology, the spindle speed of machine tool is higher and higher, and the speed range is larger and larger. Therefore, the requirements for the high-speed operation stability of IKO bearing are higher and higher.
The temperature rise of machine tool spindle bearing is an important factor to limit the bearing speed. Generally, the correct selection of bearing type, tolerance grade, configuration mode, clearance (preload), lubricant and lubrication mode can improve the high-speed performance of plastic bearings to a certain extent.
2. Service life and bearing capacity
For general machine tools, the service life of the spindle assembly mainly refers to the service life of maintaining the spindle accuracy. Therefore, the accuracy maintenance performance of the bearing is required to meet the requirements of the service life of the spindle assembly. For heavy machine tools or power cutting machine tools, the bearing capacity of IKO bearing should be considered first.
3. Stiffness and vibration resistance
In order to ensure the machining quality of the machine tool, the spindle system must be rigid enough, otherwise it will produce large re mapping error and even flutter. Vibration resistance refers to the ability to resist forced vibration and self-excited vibration.
The vibration resistance of the spindle assembly depends on the stiffness and damping of the spindle and IKO bearings. The use of preloaded plastic bearings can effectively improve the stiffness of the spindle system.Basic requirements of IKO plastic bearing for machine tool spindle
In high-speed grinder, the noise of grinding head bearing is the main component of the whole machine noise, so low-noise plastic bearing should be selected.Basic requirements of IKO plastic bearing for machine tool s