Workshop extraction systems: fixed or sliding? - Worky

Ensuring a healthy working environment in a workshop means effectively managing exhaust gases, which can be harmful to the health of those who work in close contact with vehicles every day.

In this article, we will examine the main characteristics of fixed and sliding exhaust gas extraction systems, helping you understand which solution is best suited to your workshop and its specific needs.

Why distinguish between fixed and sliding extraction systems?

Every workshop has its own characteristics, requiring different solutions for exhaust gas extraction.
Distinguishing between fixed and sliding systems is important because each type responds to specific operational and structural requirements related to:

• the layout of work areas
• the number of workstations
• the type of vehicles serviced (e.g. cars versus trucks)

In general, a well-designed extraction system is essential to protect operator health and ensure compliance with workplace safety regulations.

In the following sections, we will explore the specific features of both solutions to help you make the best choice for your workshop.

Every workshop is different. Request a specialised consultation with WORKY advisors and identify the extraction system best suited to your actual needs.

Fixed systems: what they are and when to use them

Fixed systems are installed at strategic points in the workshop and convey exhaust gases outside through overhead ducting.

Types of fixed exhaust gas extraction systems

Hose reels

Hose reels are devices that wind flexible hoses equipped with exhaust gas extraction nozzles. They are available in several sub-categories:

• Mechanically rewound hose reels: spring-driven
• Motorised hose reels: electrically driven via push-button control (GER) or remote control (GERT)
• Hose reels with integrated extractor: both of the above categories can be equipped with an on-board extractor (GMRF or GERFT)

Minisets

A type of fixed system consisting of:

• a fan
• a flexible hose
• a nozzle

The system is completed with a start/stop switch and an exhaust stack installed in the premises where it is mounted.

High-temperature extraction arms

These are wall-mounted fixed extraction arms designed to withstand the passage of high-temperature gases and fumes. They are recommended for applications involving tractors, earth-moving machinery or other vehicles with upward-facing exhaust pipes.

Pits (underfloor systems)

Underground housings that allow ducting to be concealed and provide direct access to nozzles from the workstation. They are made of robust steel sheet using a special galvanising process that ensures long-term durability and corrosion resistance.

They are available in two configurations:

• GFT-B: equipped with a removable elbow inserted into the pit when exhaust gas extraction is required; more suitable for systems used infrequently
• GFT-BR: equipped with an underfloor elbow and integrated flexible hose that is extracted when needed; more suitable for frequently used systems and closer proximity to vehicles

When should fixed systems be preferred?

Fixed systems are ideal when:

• Work areas are arranged in a complex layout with scattered, non-linear workstations

• The number of work areas is limited, as each area can be easily covered by a dedicated extraction point

• The workshop frequently handles heavy or large vehicles (e.g. trucks, excavators), which require dedicated extraction points

Sliding systems: features and advantages

Sliding systems are installations that allow the extraction nozzle to be positioned quickly and easily close to the vehicle, thanks to suspended elements that slide along dedicated rails (extraction tracks).

Sliding elements for exhaust gas extraction

• Sliding trolleys: easy to move along the rails and cost-effective
• Sliding hose reels: combine the convenience of hose reels with the mobility of a sliding system
• Touchless arms: self-supporting articulated arms that extract exhaust gases without coming into contact with the vehicle exhaust pipe
•  Telescopic drops: advanced solutions for localised exhaust gas extraction in car repair workshops, featuring a compact, clean and elegant design 

When should sliding systems be preferred?

Sliding systems are particularly recommended when:

• Workstations are arranged linearly or adjacent to each other, allowing multiple areas to be served by fewer extraction points

• Easy and ergonomic positioning of the extraction nozzle behind the vehicle is required

• The workshop primarily services passenger cars with single or dual exhausts

Fixed vs sliding exhaust gas extraction systems: comparison table

Below is a summary table highlighting the key differences:

 From a technical standpoint, both systems ensure excellent exhaust gas extraction performance. The main differences relate to space organisation, ease of use and the number of extraction points required. 

Frequently Asked Questions 

When should a fixed system be preferred?

If the workshop has a complex layout with scattered work areas and services large vehicles, a fixed system is the most practical and effective solution.

When should a sliding system be preferred?

When workstations are arranged side by side or in a linear layout, a sliding system is preferable for convenience and the reduced number of required extraction points.

Which system extracts exhaust gases more effectively?

Both systems provide excellent exhaust gas extraction performance. There are no significant technical differences in terms of extraction quality.

Can both systems be combined?

Yes. Many workshops choose to use both systems to optimise space organisation and address different operational needs.

Conclusion

There is no universal solution suitable for every workshop.
The choice between fixed and sliding systems must be based on the specific characteristics of your workshop.

By carefully considering these aspects, you can ensure a safe, efficient and well-organised working environment.

If you would like further information or a personalised consultation, contact us. Our team is ready to help you find the exhaust gas extraction solution best suited to your workshop’s needs