Shrinking in high precision mechanic

With the term shrinking in high precision mechanic, we want to indicate the union between two elements, shaped in such a way that they are complementary in order to form an interlocking connection. In mechanical machining, shrinking usually involves the interlocking of gears on shafts.

Shrinking is a term of which there is a more simplified definition: “operation, typical of mechanical constructions, by which two pieces are stably connected, introducing a protrusion of one into a corresponding cavity of the other”. A typical example of this operation is the insertion of the wheel in its axis.

Cold Shrink vs Heat Shrink:

Shrinking can be done hot or cold. Cold shrinking takes place at minus 196 ° C with the aid of liquid nitrogen and allows you to work on single or series productions. The advantages of this technique are highlighted in cases where shafts, collars and other components are coupled with levers or gear wheels, or in cases where there is a need for the interference seats to be solid.

Heat shrinking is used when there is a need to thermally expand the seat of the hole and perform the coupling. This operation allows the holding system to be heated uniformly in order to avoid jamming in areas that are colder and therefore less dilated.

At CpGrinding we take care of shrinking operations for third parties. Contact us for more information:

+39 035 940042


Precision mechanical machining for third parties

For us at CpGrinding, performing precision mechanical machining for third parties means to offer our customer a production and processing service with high quality standard.

We operate in all the main sectors where high precision mechanic is necessary, in particular we offer our services to company that operate in space-aeronautics, nuclear and renewable energy and packaging sectors.

Thanx to our machine fleet and to the latest generation software, we are able to produce a wide range of components and mechanical parts and to carry out grinding and lapping services and assembly of small and medium sized mechanical components.

We implement grinding centres capable of maximised precision, on individual cylinders or cylindrical parts and specifically on shafts and spindle components, tool holders, conical tooling machine attachments and adapter shanks.

Our production and control cycle, made with both physical and pneumatic measuring instruments, is supported by a modern and efficient computer system for the production and measurement cycles that allows us to monitor cycles and processing in real time.

Our machine fleet allows us to raise our production quality precisely because it is made up of very high precision machinery distributed by the best European companies.

We are a commercial partner for all those companies that need the construction of mechanical components, development of projects and prototypes and assembly. Contact us for more information:

+39 035 940042



Spindle manufacturing

A spindle is a mechanical device installed on a machine tool and on which a chuck can be mounted in order to clamp and hold any piece that needs processing but also to drag a tool or piece in rotation in order to be able to perform a certain type of processing.


What is grinding in mechanical processing

In mechanical processing, grinding is a procedure performed with a machine called grinding machine. Grinding is used to bring any component to the state of optimal shape or surface of the project, ensuring that all residues and excess material are eliminated, guaranteeing a high degree of finish to the machined surface.


The evolution of the precision mechanical workshop

Modern precision mechanics deals with the production of components for various sectors such as industrial, aerospace, medical and pharmaceutical sectors. Precision mechanics deals with the production of mechanical components that require a high level of accuracy. Metal turning and milling as well as control and grinding operations are part of the precision mechanics activities.


What is lapping and how it works

Lapping is a machining process performed on a metal, ceramic or glass surface, to minimize its roughness. The exact definition given by dictionaries: ” Lapping is a machining process, in which two surfaces are rubbed together with an abrasive between them, by hand movement or by way of a machine. “.

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