At the time of inspection, it is mainly correct to observe whether the rivet head of the bearing is skewed or loosely welded. The welding of the cage is good or bad. Whether the solder joint is too small, there is a problem that the solder is not strong, or the ball is caused by excessive soldering. They are all special places to pay attention to when testing NSK bearings. There are still some issues to be aware of.
Let's share with you the test of the local part of the bearing in years of work experience. First of all, the inspection of the NSK bearing in the environment should be carried out in a light environment, preferably astigmatism, in order to better observe the outside of the NSK bearing and see that there are no cracks and other abnormalities on the surface. For example, wear, scratches and bumps in the mechanical cloud process can cause the NSK bearing device to shift, resulting in poor position of the device, causing flat load and stress concentration, and reducing the accuracy and service life of the molded NSK bearing.
1. Maintenance, overhaul, and abnormal handling of NSK bearings
In order to maintain the original performance of the bearing in a good condition for as long as possible, it is necessary to maintain, repair, and prevent accidents, ensure the reliability of operation, and improve productivity and economy. Maintenance is best carried out on a regular basis in accordance with the operating standards for the mechanical operating conditions. The contents include monitoring of operating conditions, replenishment or replacement of lubricants, and inspections for periodic disassembly.
As a maintenance item during operation, there are bearing rotation sound, vibration, temperature, lubricant state, and the like.
2. Damage and countermeasures of NSK bearing
In general, if the bearing is used correctly, it can be used until the fatigue life is reached. However, there will be accidents that are prematurely damaged and are not resistant to use. This early damage, as opposed to fatigue life, limits the quality of what is known as a fault or accident. Many of them are caused by inadvertent installation, use, and lubrication, and foreign objects intruding from the outside are insufficiently studied for the thermal effects of the shaft and the outer casing.
Regarding the damage state of the NSK bearing, for example, the jam of the ferrule of the roller bearing, as a cause, the lubricant is insufficient, unsuitable, the defect of the oil supply structure, the foreign matter intrusion, the bearing installation error, the shaft deflection If the song is too big, there will be coincidences of these reasons.
Therefore, it is difficult to know the true cause of the damage by only investigating NSK bearing damage. However, if you know the mechanical use of the bearing, the conditions of use, the structure around the bearing, and the situation before and after the accident, combined with the damage state of the bearing and several reasons, it can prevent similar accidents from happening again.
The precautions for the use of NSK bearings are as follows:
Keep NSK bearings and their turnaround clean
Even small dust that is invisible to the eyes can have a bad effect on NSK bearings. Therefore, keep the area clean so that the dust does not intrude into the NSK bearing.
Use with care
In the use of NSK bearing strong impact, it will produce scars and indentations, which is the cause of the accident. In severe cases, cracks and breaks occur, so care must be taken.
Use the right NSK operating tool
Avoid replacing with existing work bearings and use the right tools. We often emphasize the importance of tools because too many customers use the wrong tools in their installations to cause damage to NSK bearings.
Pay attention to the corrosion of NSK bearings
When operating NSK bearings, the sweat on your hands can cause rust. Be careful to use a clean hand, it is best to wear gloves as much as possible.
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