Bearing device common sense (2)

Source: China Bearing Network Time: 2014-09-03

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d. Thrust bearing device The complete cooperation of the thrust bearing with the shaft is usually a transitional cooperation; the cooperation between the race and the bearing housing hole is usually the cooperation of the gap; therefore, the bearing is easier to install; the shaft spring of the double-way thrust bearing should be fixed on the shaft. ; to avoid relative to the shaft transformation. Bearing device method; usually under the condition that the shaft rotation is mostly; thus the cooperation between the inner ring and the shaft is a win-win cooperation; the cooperation between the bearing outer ring and the bearing chamber is the cooperation of the gap.
Fourth, after the bearing device view five, the smoothing agent to increase the high-speed fine angle touch ball bearing device:
High-speed fine-angle touch ball bearing; it is mainly used for high-speed rotating occasions with light load; high-precision bearing, high-speed, low-temperature low-rise oscillation and inevitable service life. It is often used as a support device for high-speed electric spindles. The key components of the high-speed electric spindle of the internal and external surface grinder.
Primary technical goals:
1. Bearing accuracy target: beyond GB/307. 1-94 P4 accuracy 2. High-speed performance target: dmN value 1. 3~1. 8x 106 /min
3. Service life (uniform): >1500 h High-speed fine-angle touch ball bearing service life has a lot to do with the device; should pay attention to the following:
1. The bearing device should be carried out in a dust-free and clean room; the bearing should be carefully selected; the bearing spacer should be ground; under the premise of insisting the height of the inner and outer ring spacers; the parallelism of the spacer should be controlled below 1um.
2. The bearing device should be cleaned before cleaning; when the inner ring slope is facing upwards; the hand is sensitive; there is no blockage; after drying; put a specified amount of oil; if the oil mist is smooth, a small amount of oil mist oil should be placed.
3. The bearing device should use special things; the force is even; the hitting is prohibited.
4. Bearing storage should be hygienic and ventilated; no corrosive gas; relative humidity does not exceed 65%; long-term storage should be regularly rust-proof.
Tapered roller bearing, water pump shaft bearing device:
First, the bearing device: the bearing device needs to be carried out under boring and hygienic environmental conditions. Before the device, carefully check the cooperation appearance of the shaft and the outer casing, the end face of the shoulder, the groove and the processing quality of the joint appearance. All cooperation It is necessary to carefully remove and remove the burrs on the outside; it is necessary to remove the sand from the unprocessed appearance of the casting.
Before the bearing device, it should be cleaned with gasoline or kerosene; it should be used after boring; and it should be excellent and smooth; the bearing should be smooth and smooth; the oil should be smooth. When the grease is smooth, it should be free from impurities, oxidation and rust. Smooth grease with excellent performance such as extreme pressure. Smooth grease filling capacity is 30%-60% of bearing and bearing housing volume; not too much. Double row tapered roller bearing and water pump shaft bearing with sealing layout have been filled with smooth grease Users can use it directly; no more can be cleared.
When bearing the device; it is necessary to apply equal pressure on the circumference of the end face of the ferrule; press the ferrule; do not directly hit the bearing end face with the number one thing; avoid damage to the bearing. Under the condition of small interference; Press the sleeve on the end face of the bearing ring at normal temperature; hit the sleeve with the head; press the sleeve evenly through the sleeve. If it is a large-scale device; use a hydraulic press. When pressing in; ensure the outer ring end face and The shoulder end face of the outer casing; the inner ring end face is pressed against the end face of the shaft shoulder; no gap is allowed.

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