Turning

Subcontracted Precision Turning Services

At Brema Srl, we specialize in complete-cycle subcontracting services for the machining and production of metal and plastic small parts, industrial components, and custom profiles, all based on customer drawings.  Our core competence is CNC sliding headstock turning, enabling us to shape any material into the exact component required. We rely on state-of-the-art STAR, CITIZEN, and NEXTURN lathes, leveraging digitalization to ensure fast, accurate, and reliable machining results.  We manage in-house processing of round or profiled bars ranging from 3 mm to 35 mm in diameter. For special machining needs between 36 and 60 mm, we collaborate with a network of trusted partner companies to maintain quality and efficiency.  📍 Based in Lombardy, Northern Italy, we serve clients throughout the country and across Europe. 

How Turning Works

Turning is a chip-removal machining process that allows components to be shaped from a metal or plastic bar using a lathe and a set of motorized tools.  The operation consists of two main stages:  – Roughing: removes excess material to define the general shape of the part.  – Finishing: performs precise movements to achieve the final geometry as specified in the technical drawing.  This process ensures precise, repeatable production batches, ready for additional processing or assembly. 

From Craftsmanship to Technology

The lathe is one of the oldest and most versatile machine tools in history. Over time, it has evolved from a simple manual device into a powerful and efficient machine, available in various configurations.  Our CNC lathes represent the cutting edge of modern machining: the process is fully automated and managed by a computer equipped with detailed technical files, including dimensions and tolerances.  📩 Request more information or speak with one of our representatives — we’ll be happy to support you at every stage of your project.

FAQ

What is turning?

Turning is a chip removal process in which a workpiece rotates on its axis while a stationary cutting tool removes material to create cylindrical shapes or complex profiles. It is primarily used on metals, but also on wood or plastic, thanks to the high precision offered by machine tools such as CNC lathes.

What’s the difference between external turning and drilling/boring?

External turning involves reducing the outer diameter of a rotating workpiece using a cutting tool. In contrast, boring is used to enlarge or refine pre-existing holes, ensuring tight tolerances and high-quality surface finishes.

Which materials can be machined with cnc turning?

CNC lathes can process a wide range of materials: carbon and stainless steels, lightweight alloys (such as aluminium, brass, ERGAL), titanium, and engineering plastics like Nylon, PEEK, or PETG.
Material selection depends on strength requirements, tolerance levels, and the specific application.

What inspections are performed on prototypes and series production?

Throughout the production cycle, Brema conducts in-process and final inspections using tools such as CMMs, micrometres, callipers, gauge blocks and inspection logs.
Each batch is checked for dimensional accuracy, surface finish and compliance with the technical drawing.

What are the standard lead times?

For prototypes or small batches, standard lead times are typically around 2–3 weeks, depending on current workload and machine availability.
For medium and large series, lead times are adjusted based on volume and agreed upon with the customer, ensuring speed and efficiency.

Which file formats do you accept (CAD, CAM, STEP)?

We work with CAD/CAM files in formats such as .DWG, .DXF, .STEP, .IGES and similar.
We also offer support for file conversion and model preparation using in-house CAD/CAM software, fully aligned with Industry 4.0 practices.

How are components shipped: packaging, transport, insurance?

Components are packed using suitable materials, such as corrugated cardboard, stretch film and expanded polyurethane, with custom systems designed to protect them during transport.
Shipping is carried out via specialised couriers, with appropriate insurance coverage to ensure the parts remain intact until delivery.

What are the differences between manual and cnc turning?
  • Manual turning requires constant operator intervention and offers limited precision and speed.
    • CNC turning operates via numerical commands (G-code), ensuring high precision, repeatability, speed, and minimal human error.
What operations do you offer besides turning (milling, drilling, etc.)?

In addition to turning, Brema provides:

  • Light milling integrated into turning centres
  • Drilling and boring for internal holes
  • Threading, grooving, parting-off, knurling

All operations are carried out on advanced multi-axis CNC machines to minimise setup times.

What is the minimum order quantity?

There is no strict minimum order quantity: we produce prototypes and single parts with the same care and attention as large-scale production.
Every order receives the same level of quality, lead time management and inspection standards.

Tornerie Brema Srl

Contact us for more information or to receive assistance from one of our experts.