Basic method for inspection and maintenance of IKO mill bearings

In general, if the IKO 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 rolling mill bearing, for example, the jamming of the ferrule rib 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 the bearing damage of the rolling mill. However, if you know the IKO bearing's use of machinery, the conditions of use, the structure around the bearing, and understand the situation before and after the accident, combined with the damage state of IKO bearings and several reasons, it can prevent similar accidents from happening again.

The precautions for the use of IKO bearings are as follows:

Keep rolling mill bearings and their turnaround clean

Even small dust that is invisible to the eyes can have a bad effect on the rolling mill bearings. Therefore, keep the area clean so that the dust does not intrude into the bearing.

Use with care

In the use of the mill 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 mill operating tools

Avoid replacing with existing bearing tools 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 the rolling mill bearings.

Pay attention to the corrosion of rolling mill bearings

When operating the rolling mill bearings, the sweat on the hands can cause rust. Be careful to use a clean hand, it is best to wear gloves as much as possible.

For more information and purchase please visit: https://www.supplyforever.com

NSK bearing lubrication scheme and the installation and use of grease

Lubrication has an important influence on the fatigue life and friction, wear, temperature rise and vibration of NSK bearings, especially rolling bearings. Without normal lubrication, the bearing will not work. The reason for NSK bearing damage indicates that about 40% of bearing damage is related to poor lubrication. Therefore, good lubrication of NSK bearings is an effective measure to reduce bearing friction and wear.

In addition, NSK bearings are lubricated with heat, rust, seal, and shock.

The role of NSK bearing lubrication can be briefly explained as follows

a. forming an oil film between the two rolling surfaces or sliding surfaces that are in contact with each other to separate the two surfaces, reducing friction and wear of the contact surface.

b. When using oil lubrication, especially when using circulating oil lubrication, oil mist lubrication and fuel injection lubrication, the lubricating oil can take away most of the friction heat inside the bearing and play an effective heat dissipation effect.

c. When grease lubrication is used, it is possible to prevent foreign matter such as dust from entering the bearing and sealing.

d. Lubricants have the effect of preventing metal corrosion.

e. Extend the fatigue life of NSK bearings.

First, the requirements for the installation surface and installation site

If foreign matter such as iron filings, burrs, dust, etc. enters the bearing, it will cause noise and vibration during the operation of the bearing, and even damage the raceway and rolling elements. Therefore, before installing the bearings, you must ensure that the mounting surface and the installation environment are clean.

Second, the bearing must be cleaned before installation

The surface of the bearing is coated with anti-rust oil. You must clean it with clean gasoline or kerosene, and then apply it with clean high-quality or high-speed high-temperature grease. The effect of cleanliness on NSK bearing life and vibration noise is very large. But we must remind you that the fully enclosed bearings do not need to be cleaned and refueled.

Third, the choice of grease

Lubrication has a very important impact on the operation and life of NSK bearings. Here is a brief overview of the general principles for selecting greases. Grease is made of base oil, thickener and additives. The grease performance of different types and different grades varies greatly. The allowable rotation limit is different. Be careful when selecting. The performance of grease is mainly determined by the base oil. Generally, the low viscosity base oil is suitable for low temperature, high speed and high viscosity for high temperature and high load. The thickener is also related to the lubricating properties, and the water resistance of the thickener determines the water resistance of the grease. In principle, the different greases of the brand cannot be mixed, and even the grease of the same thickener may have a bad influence on each other due to the different additives.

For more information and purchase please visit: https://www.supplyforever.com