A bush is a mechanical part that is generally cylindrical and hollow (ring-shaped), usually cylindrical, square or hexagonal in shape, and acts as a guide.
Its main role is to guide, position, protect or reduce friction between two components.
Bar-turned bushes are mainly used in the mechanical engineering industries and wherever precision parts are required, such as in the manufacture of bearings.
Your product
We also manufacture other, more specific parts based on your specifications – come and meet us.
Have a particular product in mind? Contact us to discuss it.
Bar-Turned Bushes: JACQUEMOUX DÉCOLLETAGE Expertise
In a mechanism, the bush often works out of sight. Yet it is the bush that ensures a shaft is properly guided, a bearing is held in place and a moving part lasts. In the heart of the Arve Valley, JACQUEMOUX DÉCOLLETAGE machines custom precision bushes for manufacturers who need reliable dimensions from one batch to the next, from prototype through to very high-volume production.
What is a bar-turned bush?
A bush is a hollow, cylindrical, ring-shaped mechanical part whose role is to guide, locate, protect or reduce friction between two components. Its outer profile can be cylindrical, square or hexagonal depending on the intended setup.
Produced by bar turning, the bush is machined from the bar in a single clamping or in just a few operations: inner and outer diameters, shoulders, chamfers and grooves are produced to your drawing. This method ensures good concentricity and carefully finished bearing surfaces, two decisive factors when the bush houses a rotating shaft.
The types of bushes we produce
Each function calls for a different geometry. Our range includes:
- Retaining rings: they lock a part in position on a shaft and prevent axial movement.
- Sealing rings: metal parts that contribute to sealing a shaft passage or housing, either alone or combined with a seal.
- Wear rings: replaceable interposed parts that protect the shaft or housing and simplify maintenance.
- Guide bushes: they maintain a set spacing while guiding a component (see also our bar-turned spacers).
- Friction bushes: designed for sliding surfaces, they limit wear between two parts in contact.
- Plain bearings: bearings that support and guide a rotating shaft.
For a geometry that falls outside these families, we work directly from your specifications.
Materials chosen to suit the bush’s function
A friction bush and a retaining ring are not subject to the same stresses. We guide you towards the material best suited to the application:
- Free-cutting steel and heat-treated steels: for retaining rings and wear rings subject to high loads or abrasion.
- Stainless steel: for damp environments or equipment subject to hygiene requirements.
- Brass and copper alloys: materials valued for friction bushes and plain bearings.
- Aluminium: when the weight of the assembly matters.
Where are our bar-turned bushes used?
Bar-turned bushes are found wherever a part must be guided or positioned precisely: bearing manufacturing, locks and hinges for the construction sector, guidance systems on food processing and agricultural equipment in the machinery and equipment market, and mechanical systems for industry and wholesale trade. Our teams also work for the automotive, energy, plastics industry and paramedical sectors.
Custom Bushes: Precision Checked at Every Stage
As soon as we receive your drawing, we analyse the functional tolerances and the feasibility of the part. Prototyping and pre-production allow the bush to be validated before it moves into medium or high-volume production.
To check dimensions, our workshop relies on digital profile projectors and a non-contact 3D measuring machine, complemented by automated inspection of parts. Heat treatment, polishing and coatings are carried out with nearby partners as part of our additional services. Our quality system is certified ISO 9001, IATF 16949 and ISO 14001.
Have a specific bush project? Tell us about your application and we will work out the most suitable solution. Request a feasibility study
