Pipe Freezing, Shrink Fitting and Shrink removal, Medical liquid nitrogen supplies and equipment.

Shrink fitting alleviates the possibility of damage by distortion or metallurgical change, such as case hardening, or other surface treatments, caused by uneven or excessive local heating.

Cyril W Bishop Engineering Services Ltd. Liquid Nitrogen Shrink Fitting Bishop Engineering undertake shrink fitting operations of any size.

SHRINK-FITTING Our service also covers Shrink fitting, which is a safe, economical and efficient method of assembling components without using the conventional system of force fitting, or heating to expand outer components.

A common method used in industry is the use of induction shrink fitting which refers to the use of induction heating technology to pre-heat metal components between 150˚C and 300˚C thereby causing them to expand and allow for the insertion or removal of another component.

Typically this was for the shrink-fitting of components such as large crankpins in crankshafts or flywheels.

As a result, each bearing must be made and finish-ground individually; then assembled into a built-up crankshaft, usually by shrink-fitting.

Other methods of shrink-fitting include compression shrink fitting, which uses a cryogen such as liquid nitrogen to cool the insert, and shape memory coupling, which is achieved by means of a phase transition.

The sleeves can be pressed into place, or they can be held in by a shrink fit.

When the engine block cools down it shrink fits around the sleeve holding it into place.

Haimer Germany's market leader in Spindle tooling, including shrink fit and tool balancing systems and highly accurate 3-D sensors.

Then the next hoop (either B2 or C1) is similarly heated so the assembled A tube and B1 jacket can be lowered into position for a successive shrink fit.