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Why Use Sealed Bearings?

Sealed spherical roller bearings reduce space, cost and also the environment. They are appealing features in a highly competitive market.Seals on spherical bearings opens new applications for this kind of bearing. In the future, seal bearings market could be a substantial portion of the market total for Spherical roller bearings.

Sealed Spherical roller bearings are designed to withstand high loads and massive misalignments and provide effective protection against dirt, and at same time keep the lubrication.

The sealing can add a variety of advantages:

The bearing is shielded from external contaminants.
Lubricant is held in the correct position. This means that the bearings will be kept lubricated throughout their lifetime or the time between relubrication is extended.
Easier handling. The bearing is protected from dirt during the process of mounting.
Space conserving. External sealing is a way to save space.

The seals are made that have two lip seals: an outer lip that wards off fine particles, and an inner one that creates the actual seal. This ensures a good seal and a longer lifespan. Furthermore to larger bearings the seals are easy to remove, which allows examination of the bearing, and in the event of need, replacement of seals.

This is a combination of the latest bearing design techniques – self-guiding rolling rollers, steel cages, and a floating guide rings – to produce the most efficient spherical roller bearings , when it comes to capacity, friction and longevity. Sealed spherical roller bearings are able to be able to handle misalignment this allows for a an even distribution of load, even if the machine shaft is disaligned.

In the instances where this product was used to perform, it has been successful. It has tested in the lab and in actual scenarios, and we are conducting further extensive lab testing to be able to meet the anticipated market requirements. While the bearing has met the original specifications for performance but the extreme capabilities of it are greater.

The results of all tests show that the bearing’s performance exceeds expectations in the areas that they’ve been tested. With the knowledge gained through these testing, it is possible to suggest the bearing for more demanding operating conditions, and pave the way for the development of new applications.

Space saving

A bearing that has integral seals takes up less space than a bearing that has external seals. This compact design offers distinct advantages, like weight reduction and space saving, which the end-user can constantly measure in terms of savings in terms of money. An excellent example can be found in robotics. When you replace the existing bearing arrangement with a sealed spherical bearing, the robot’s bearing arrangement’s width can be cut by half. This reduces the overall size of the robot arm, and the end user can place the robot into smaller areas. It is also a cost-effective option. Cleanliness isn’t as important when the bearing is installed. In addition it is not need to be lubricated, which can save you money in maintenance.

Simple mounting

With seals built inside the bearings, it’s more affordable to install and place bearings. A company that manufactures Jacquard weaving looms, which is a kind which produces top-quality cloth, has chosen this method. This Ifor Williams sealed bearing is ideal for the high-shock loads as well as the slow speeds needed for this type of textile.

Machining processes in the housing to accommodate seals separately are no longer required and the complicated mounting process for seals are removed. Additionally the bearing is protected from the entry of dirt when it is mounted and the initial lubrication is already in place. In most instances it is not necessary to lubricate to operate these looms. If needed, relubrication could be offered with the feature code W33.


For trams, sealed bearings are employed to provide an eco-friendly solution. These vehicles have frequent stops and start with a moderate pace of running. In this case the ratio C/P (the ratio of the basic static load ratings to the equivalent loads on dynamic bearings) is approximately 10. The reason for switching the bearings to sealable ones was due to the fact that they would reduce the possibility of leakage from seals on the outside. Prior to this, oil-lubricated bearings were employed with the same oil used to lubricate both the gearboxes and bearings. A sealed bearing it is coated using grease, and the seals on the bearing provide additional protection. This results in less oil gets dispersed.

Protection against dirt

One of the fields where the seal’s protective characteristics are employed is in the steel production process. Seals for spherical roller bearings with a spherical been successful for continuous casting machinery as well as roller tables. In casting machines, the molten steel transforms into slabs, sheet iron or billets. Bearings are employed for support rollers in the conveyor system, and are subjected to continuous streams of water that are mixed with salt and other contaminants. In this scenario the temperature that is affecting the bearings can range between 20 and 180 degrees Celsius. Support roller speeds vary in the range of 2 to 10 r/min, with a an average C/P ratio of under one.

Traditional seals on the outside aren’t enough to stop the entry of steam or scale. The traditional method was to constantly fluidize the bearings to guard the bearings from dirt. This demands a massive amount of oil. A single slabcaster could consume as much as 50 tonnes of grease each year. By sealing spherical ball bearings the amount of grease consumed is drastically reduced. The sealed bearing doesn’t need to be lubricated, while the seal on the outside is occasionally lubricated.

In the real world this means that the use for grease will be limited to just a couple of tonnes annually. As well as the reduced use of lubricant, which produces savings, even larger savings are to be gained through eliminating the need to deal with the lubricant-contaminated wastewater. Another benefit is the fact that it is much easier for the system to be kept in good order. This means that every part which require cooling are kept cool. This means that the number of breaks, in which the steel casting cracks open and liquid steel spills out, is reduced dramatically.

Sealed Spherical Roller Bearings are available in two versions with one designed for normal temperatures of up to 110 degrees Celsius and another that is designed for applications with high temperatures that can reach 180 degrees Celsius. The bearing can be fitted with a variety of seal and lubricant options for the material. The selection includes bearings that can be used that can be used on shafts with diameters ranging from 40 mm to 220 millimeters.