HOW IT WORKS TO KEEPS RUNNING

  TECHNICAL INFORMATION

If you have any questions, please let us know, we like to talk about our bearings !
#

BEARING INSERTS

Double-row ball bearings have the advantage that they are very light and adjustable.

The difference between the ball bearings and the spherical roller bearings in the Extreme Bearing is that the ball bearings are sealed by 2-rs bearing seals while the spherical roller bearings are not. These seals will give extra protection in case the housing's seals become broken or breached.

Spherical roller bearings have the advantage that they provide a much larger load capacity than ball bearings and can accommodate axial force.

ADAPTER SLEEVE

Clever fitting using an adapter sleeve takes away the need for an eccentric clamping ring or allen key, both have been known to cause additional problems. The choice of the used materials contributes to a longer service life and, ultimately, better results and lower costs.

SUPERIOR TRIPLE SEALING 


SUPERIOR AGAINST SAND, WATER AND DETERGENTS

  1. Double lip centrifugal seal

  2. Grease-filled housing

  3. 2-RS bearing seal

Standard Extreme Bearing housings feature centrifugal seals, specially developed to repel dirt and contaminants using centrifugal force generated by the shaft.

The gaps between the lips of the centrifugal seal and the stator must be sealed to keep out dust and water. To improve the age of the bearing for centrifugal shaft seals, we used an automatic lubricator. 

Many sealing options are possible. Each possesses different properties depending on the application. We would be pleased to advise you to the best choice of seal.

#
#

CENTRIFUGAL SEALS AND LUBRICATION

SEALING WITHOUT CREATING WEAR ON THE SHAFT

Standard Extreme Bearing housings are made of 316 stainless steel. Specially developed centrifugal seals are also used.

The rubber of the rotor ring clamps around the shaft and is turning with the shaft vertically against the stator ring. Because the lips are positioned vertically against the stator ring, the dirt will be repelled by the centrifugal force from the sealing lips. The rotor ring can be moved eccentrically in relation to the stator ring. In this way, the centrifugal seal is able to absorb any misalignment of the shaft without creating wear on the rubber lips.

The grease passes the retaining edge through the lubrication channels under the stator ring and between the two sealing lips and stator ring. This makes sure that any dirt is flushed away.

The clamping of the rubber rotor ring around the shaft means that the bearing can be assembled even on a shaft which has suffered light surface damage such as a groove.

LUBRICATION

Berulub FG-H-2-SL is highly recommended as the grease for lubricating Extreme Bearings. It is a high performance and food-safe lubricant.

Due to the low viscosity of the base oil, this grease is very suitable to use in the centrifugal seal. This smooth but tacky grease will make sure that all dirt is kept out of the seal. The high-load capability (four ball weld load >4000N acc. DIN 51 350 P4) makes this grease ideal for all types of Extreme Bearings. We supply the bearings but we do not supply lubricants. For more information about lubricating Extreme Bearings, you are welcome to write to a Dutch distributor of lubricants at the following email address: FenS.

AXIAL DISPLACEMENT

SUITABLE FOR EXPANSION AND CONTRACTION OF THE SHAFT

LOCATING RING

The seats are machined to a tolerance to provide a loose fit.

The bearing seats in the housings are sufficiently wide to allow axial displacement of the bearing and to accommodate for thermal expansion of the shaft due to high temperatures, such as on a baking conveyor belt.

The Extreme Bearing blocks can absorb expansion of the shaft because there is an adjustment or locating ring in the bearing housing. The locating ring can be removed from a bearing block of a pair placed opposite each other so that axial displacement is possible.

#
 BAS-ERP - Sample 1 for three columns

TRADITIONAL BEARING UNITS

The force on the shaft holds the outer ring firmly in the bearing housing in the case of common bearing units. Ultimately, the forces exerted can damage the bearing, inner ring and ball race and therefore the bearing insert may need to be replaced.

 BAS-ERP - Sample 2 for three columns

EXTREME BEARING

Extreme Bearings are designed in a different way.  Instead of a single row, an Extreme Bearing  has a double row roller bearings. The outer and inner rings are not exposed to force, like in a traditional bearing. This is because they can move freely and there is no friction.

 BAS-ERP - Sample 2 for three columns

FREE MOVEMENT

Extreme Bearings have  freedom of movement and less friction.

picture wikipedia

 BAS-ERP - Sample 2 for three columns

BEARING ANGULAR MISALIGNMENT

During operation, the shaft ends will oscillate as a result of belt tension and it is necessary to achieve self-alignment without generating force in the bearing parts in order to ensure a long bearing working life.