Hutchinson has a range of all steel mounting whose essential elements is the “steel cushion”, made from woven stainless steel wire and compressed.

Unaffected by corrosion. Steel mountings are unaffected by oil, grease, solvents, weather conditions and corrosive products.

The flexible bush replaces the mechanical linkage in the case of oscillation movements or pivoting movements of limited amplitude.

A flexible bush has an elastomeric element enclosed between an outer sleeve and a center axis intended to replace a greased bush.

Hutchinson is a range of complex insulations and acoustics foams of polyurethane or cellular.

Their main function is the reduction of the airborne noised (insulation, absorption and damping) by means of partial or complete acoustic casings.

When transmitting torque from a drive shaft to a driven shaft, flexible couplings:

• absorb and dampen irregularities in the torque,

• distribute peak loads,

• allow misalignments and offsets between the shafts,

• permit some distortions in the mounting beds,

• avoid the unwelcome constraints that may occur if a rigid coupling were fitted in the same condition.

• allow a lighter construction, with wider tolerances, and lower cost.

In particular, a flexible coupling is absolutely essential if the machines that are coupled are on

flexible mountings.

Moreover, there is no play in a flexible coupling, and it therefore runs silently, without friction

and does not need to be greased.

An element forms a sealing function when it prevents the passage of a fluid from a one enclosure to another.

Such elements are called “Seals”.

If the object is to prevent the flow of a fluid from an enclosure into a neighbouring enclosure. the seal is called a single seal.

If the seal must prevent the flow of another fluid which may bein the second enclosure into the first. The seal is called a double seal.

If the two mechanical parts between which the leakage is likely to occur are fixed with relation to each other.

The seal is called a static seal. If one or both of these parts is moving relative tothe other.

The seal is called a dynamic seal.

In this document. we will only be dealing with dynamic seals.

In practice, we only meet two sorts of relative movement, which may or may not be combined:

- linear translation (such as the sliding of a piston in a cylinder).

- rotation (the relative rotation about a common axis of a shaft in a hub or a crank case).