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The problem of the quality condition of INA bearing operation
Source: China Bearing Network Time: 2013-11-26
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Timing view usually uses the following methods: the view under working conditions is based on the bearing's rollover, oscillation, temperature and lubricant properties; the lubricant is compensated or replaced at the moment to identify. Work in view and fault handling. Bearing view is abundant Investigate the timing of the machine's timing view and replacement; check the raceway surface condition and whether it can be used again.
Before using INA bearings; the first thing to look at the appearance of the INA bearing; then the degree of INA bearing is not the load of our requirements and specifications. INA bearing appearance should be operated under the astigmatism; the crack and appearance of the bearing Make a specific view.
In the appearance of the bearing; the first variety of cracks and wear is the simplest view; such scars will make the bearing not normal equipment; then lead to excessive eccentric force gathering; these scars will also make the bearing in normal use; work The professor said that the bearing appearance will also show the appearance of the skin; this situation is mainly caused by the weak connection between the part and the base metal; no matter the appearance of the problem, the rotation precision of the bearing will be made. With the reduction of the life of the application.
When the brain testis selects the bearing type according to the tendency of the load; about the pure axial load; the thrust bearing is generally selected. The smaller pure axial load can be selected by the thrust ball bearing, and the larger pure axial load can be used. Thrust roller bearings. For pure radial loads; generally used deep groove ball bearings, cylindrical roller bearings or needle bearings. When the bearing is subjected to radial load R; there is also a small axial load A; Use deep groove ball bearings or angular touch ball bearings or tapered roller bearings with small touch angles, when the axial load is large; angle contact ball bearings or tapered roller bearings with larger touch angles may be used; The combination of bearing and thrust bearing structure; distinguishes between radial load and axial load.
The mechanical 淖 is at the normal speed; the bump of the speed does not affect the selection of the type; as long as the speed is high, there will be a significant effect. The bearing samples include various types and The limit speed value of a class-scale bearing. This speed means that the load is not too large (P ≤ 0. 1C; C is the base rated dynamic load); the cooling condition is normal; and the maximum allowable speed when the bearing is a 0-level tolerance bearing.
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When the middle line of the shaft does not coincide with the middle line of the bearing seat and there is a point of view error; or when the shaft is bent or skewed due to the force of the shaft; the axis of the inner ring of the bearing will be deflected. At this time, the necessary alignment should be selected. Functional self-aligning ball bearings or SKF spherical roller bearings. These bearings can still function normally when there is little relative deflection in the axis of the ring.
Cylindrical rolling on bearings and needle bearings is most sensitive to bearing deflection; such bearings can be lower than ball bearings in a skewed shape. Therefore, when the stiffness of the shaft and the bearing stiffness of the bearing housing are low; Try to avoid using such bearings.
ㄋ ┲岢 ┲岢 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Select the bearing in the inner ring of the watch (such as N0000, NA0000, 30000, etc.). When the shaft is on the long axis, for the purpose of easy assembly and disassembly; the tapered hole with inner ring hole of 1:12 can be selected (for equipment Bearing on the bushing).
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