The lamination of a bush also helps to decrease the work rate of the elastomer under high radial loads.
Laminated bushes
This type of bush has a thin metallic tube between the internal tube and the external tube.
The object is to have a higher stiffness radially while keeping practically the same stiffness in torsion.
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Pivot bushes
This type of bush is intended to offer minimum resistance to torsion.
FLUIDBLOC
This type of bush is intended to offer minimum resistance to torsion. The elastomer is bonded to only one of the armatures, and a suitable permanent lubricant ensures the lubrication between the elastomer and the second armature ensures a very low torsional resistance.
Seal sare provided at each end to prevent the lubricant from coming out and stop impurities from getting in.
Resistance to axial force is provided by a flange in the elastomer which bears against the side of the outer sleeve, the force being transmitted by a lateral washer.
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Simple bushes
Thhey ensure an “anti-noise” role at the limit of axial movement.
FLEXIBLOC (fig. 1) – FULLY BONDED
This is a bush made up of 2 concentric tubes between which of elastomer is bonded. Under the effect of external forces or torques, the relative movement of the tubes will cause an elastic deformation of the elastomer. By consulting the service conditions, a bush should be chosen which will remain within its elastic operational limits.
SILENTBLOC (fig. 2) – PRESTRESSED
This is a bush made up of 2 concentric tubes between which a ring of “adhérite®” elastomer is inserted by force. Under the effect of external forces or torques, the relative movement of the tubes will cause an elastic deformation of the elastomer. Above a certain value the adherite will slide in the tubes.
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Flanged bushes
In this type of bush, one of the tubes is flanged.
In this type of bush, one of the tubes is flanged.
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Spherical bushes
Articulation whose spherical reinforcements allow to support radial and axial loads.
In this bush, the outer sleeve and centre axis are spherical, which enables the bush to resist relatively high radial and axial loads.