Sealing new structure extends IKO bearing life



Flow IKO bearings are essential for use in harsh environments, and IKO bearing seals and seals are essential because they prevent dirt ingress and extend IKO bearing life. The rolls in the mill are typically supported by four rows of sealed tapered roller IKO bearings. It is required to withstand strong impact loads, intrusion of water and debris.

The negative pressure generated in the IKO bearing can cause water to intrude from the main seal, and the structure of the hole seal has a large influence on the negative pressure. Therefore, lower IKO

The negative pressure in the bearing is a basic requirement to prevent water from entering. The most effective method is to make the hole seal not directly in contact with water, while retaining the original function of the hole seal - preventing water and dirt from invading from the side of the roll neck. The sealing method uses surface contact instead of line contact. Whether it is running or stationary, the surface contact hole seal has good sealing performance. Therefore, the new ultra-capacity sealed cleaning roller neck IKO bearing has higher reliability than the conventional sealing roller neck IKO bearing.

In addition, IKO Bearings Italy Seals has recently developed a new generation of oil and grease seals MudBlock. Its optimized design of the sealing structure can effectively prevent the intrusion of dirt. The conventional sealing structure has a radial sealing lip, a clamping spring between the outer diameter and the race, and a fixed sealing ring. The new structure has a push baffle between the bushing and the seal ring. The outer surface of the seal ring and the inner diameter of the bushing are rubber, and the inner lip is pre-lubricated with waterproof grease. MudBlock can be made from a variety of elastic materials depending on operating conditions and application requirements. These materials include: nitrile, polyacrylate, fluorinated synthetic rubber, and the like.
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Detailed explanation: lubrication method of bearing



The lubrication of bearings is mainly divided into grease lubrication and oil lubrication.

Grease lubrication

Grease lubrication can be used after filling the grease for a long time without replenishing, and the structure of the sealing device is relatively simple, so it is widely used.
Grease lubrication has a sealing method in which the sealed bearing is filled with grease in advance, and a filling and fat filling method in which the inside of the outer casing is filled with an appropriate amount of grease and replenished or replaced at intervals.

In addition, for machines that require multiple bearings to be lubricated, a centralized grease supply method that connects the pipes to each lubrication location is also used.

1) Filling amount of grease
The amount of grease filling in the outer casing varies with the structure and volume of the outer casing, and is generally filled to 1/3-1/2 of the volume.
When the filling amount is too much, the grease will deteriorate due to stirring and heating, aging and softening, and care should be taken.
However, when used for low-speed bearings, it is sometimes filled to 2/3-1 of the volume to prevent foreign matter from entering.
2) Replenishment and replacement of grease
Grease replenishment and replacement are closely related to the lubrication method. No matter which method is used, clean grease must be used, and care should be taken to prevent the intrusion of external foreign matter.
The added grease should be the same brand of grease.
When replenishing grease, it is especially important to ensure that the new grease does enter the inside of the bearing.
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