16/10/2025

Precision Mechanical Workshop: What It Is and How It Works

A precision mechanical workshop is much more than a place where metals are worked: it's where complex projects take shape, thanks to technical expertise, advanced machinery, and constant monitoring.
Each component produced must meet strict dimensions, quality, and specifications, because even the slightest variation can affect its proper functioning.

From CNC turning to precision milling, from drilling to surface finishing, these workshops transform raw materials such as steel, special alloys, aluminum, and brass into parts ready for critical applications in various sectors.
 

• What is precision mechanics?
• Workflow in a mechanical workshop
• Guerrini Lauro: precision mechanical workshop in Bergamo

 

What is precision mechanics?

Precision mechanics includes all mechanical processes that require tight tolerances, controlled finishes, and high repeatability.

These components are designed to function in complex systems and to withstand high stress. CNC lathes, milling machines, fixed or sliding headstock lathes, and multi-spindle machines are used to machine materials such as free-cutting steel, stainless steel, leaded and unleaded brass, aluminum, and special alloys.

The main phases include turning, milling, drilling, chamfering, and, when necessary, heat or surface treatments. This approach is essential in sectors such as automotive, hydraulics, plant engineering, plumbing, food, and general mechanical engineering.
 

Workflow in a mechanical workshop

The production process in a precision mechanical workshop is complex and includes:

• Technical analysis and consulting: starting from the creation of a drawing or one provided by the customer, tolerances, materials, and geometries are evaluated. The technical office proposes any modifications to optimize time and results.
• Material selection: free-cutting steels, stainless steel, special alloys, brass, and aluminum, all certified and traceable.
• Machine programming and setup: CNC lathes, sliding or fixed head lathes, and multi-spindle machines are configured with tools and cutting parameters calibrated for different batches and complex geometries.
• Mechanical machining: turning, milling, drilling, and chamfering give shape to the piece, with continuous checks to ensure uniformity and quality.
• Treatments and finishes: hardening, anodizing, polishing, and protective coatings, according to customer specifications.
• Quality control: instruments such as micrometers, calipers, and three-dimensional measuring machines (CMMs) verify every detail, both during and after the production process.

 

Guerrini Lauro: precision mechanical workshop in Bergamo

Guerrini Lauro is a Bergamo-based metalworking workshop with over 45 years of experience in manufacturing custom precision mechanical components.

The company serves sectors with high technical demands:

• Fittings: parts for high-precision fittings, hydraulic systems, and piping systems.
• Automotive: mechanical parts, mounts, and engine components.
• Valves and hydraulics: turned parts for valves and hydraulic systems, essential for fluid control and management.
• Plant and energy: parts for plumbing and heating systems, ensuring robustness and efficiency.
• Food and faucets: safe and durable stainless steel components, certified for food contact.
• Mechanical: Turned parts for complex industrial machinery.

Turning processes, performed with sliding-head or fixed-head CNC machines, CNC lathes, automatic or bar feeders, and mechanical multi-spindle machines, allow us to process metals with diameters ranging from 3 mm to 50 mm and from 4 mm to 42 mm hexagons, for a wide range of industrial applications.

The materials we process—free-cutting steels, stainless steel, brass, aluminum, and special alloys—are certified and traceable, guaranteeing reliable, durable components that comply with the most stringent specifications.


Every piece made at Guerrini Lauro is the result of consolidated experience, technological innovation, and attention to detail, ready to integrate seamlessly into our customers' systems.

A precision mechanical workshop, like ours, accompanies the customer throughout the entire process, ensuring reliability, consistent quality, and compliance with tolerances.