Prepared by the FEVI Technical Department | Published 12 AUGUST 2026 | Last revised: 12 AUGUST 2026
Machining aluminium can generate residues that may appear to belong to the same application but actually require different extraction systems. A lathe or machining centre produces swarf wetted with oil or emulsion; a saw may generate drier swarf; sanding, deburring or finishing can produce fine dust, including airborne dust. Conveying all these residues into the same industrial vacuum cleaner without verification can clog the filter, make separation ineffective or introduce risks that have not been considered.
Selection therefore begins with the form and condition of the residue, not simply with the name of the metal. Particle size, quantity, percentage of liquid, viscosity, temperature, presence of other materials and duty-cycle duration must all be known. With fine aluminium dust, potential combustibility and any area classification by competent persons must also be assessed.
Three streams to identify before selecting the machine
Dry swarf may consist of curls, flakes, short fragments or lightweight residue. Size and shape determine whether it can pass through hoses, bends and separators without becoming trapped. The quantity produced per cycle determines the required collection-container capacity and emptying frequency. Even lightweight material can require significant volume because it occupies a large amount of space.
A mixture containing oil or emulsion changes the system completely. The liquid must be collected in a compatible tank, while a basket or separator retains the solids. If the fluid is to be recovered and reused in the process, control and compatibility procedures must be defined by the user; the industrial vacuum cleaner does not automatically guarantee the quality of the fluid returned to the machine.
Fine dust generated by sanding, grinding or finishing must not be treated as simply very small swarf. It can rapidly load the filter, disperse into the air and, under certain conditions, present a fire or explosion hazard. It requires dedicated characterisation, capture and machine configuration.
The FEVI solution page for aluminium and PVC already separates applications into dry swarf, deposited fine dust and airborne dust. This application map is the starting point for deciding whether the requirement calls for a solids vacuum cleaner, an oil-and-swarf unit or an industrial dust collector.
| Stream | Example | Architecture to consider | Decisive data |
|---|---|---|---|
| Dry swarf | Swarf from cutting bar or profiles | Industrial vacuum cleaner for solids/swarf | Particle size, volume and distance |
| Swarf + liquid | Turning with coolant emulsion | Oil-and-swarf vacuum cleaner with separator | Litres, viscosity, solids and discharge |
| Deposited fine dust | Finishing residue | Compatible fine-dust industrial vacuum cleaner | Particle size, mass and filter |
| Airborne dust | Sanding or deburring | Dedicated source-capture system / industrial dust collector | Hood, airflow and risk |
Dry swarf: conveying, particle size and capacity
To convey swarf, sufficient velocity inside the hose is required to prevent accumulation. Tight bends, reductions and long corrugated sections encourage blockages, particularly with continuous curls. The hose diameter must accommodate the maximum particle size while maintaining the operating point required by the industrial vacuum cleaner.
The suction nozzle should be positioned close to the deposit area without interfering with moving parts or machine guards. If swarf is projected from the process, a hood following its natural direction can reduce the airflow required. Collecting material after it has spread across a large area takes longer and increases the possibility of the fine fraction becoming airborne.
The collection container must be sized according to apparent volume, not only weight. Swarf can occupy substantial space and compact irregularly. Emptying, handling and destination of the recovered metal must form part of the operating cycle, preventing a full container from allowing material to reach the filter or inlet.
Oil and emulsion: separating solids and liquids during the cycle
An industrial vacuum cleaner for oils and swarf integrates a tank for liquids and a separator for solids. The nominal tank capacity and separator-basket capacity are not interchangeable: a process producing large amounts of swarf may fill the separator before the liquid tank, while a sump containing little solid material may rapidly fill the tank.
Viscosity and temperature affect both suction and discharge. The type of oil or emulsion, concentration, additives and presence of foreign materials should all be declared. Foam, sludge or fine dust can behave differently from ordinary swarf and may require testing or dedicated configurations.
Discharge may be carried out using a pump, airflow reversal or other systems provided by the model. Height difference, distance and destination of the liquid must be known. If the fluid is returned to the machine tool, the user must define quality, contamination and microbiological-management criteria: the separator basket removes swarf but does not replace a coolant-filtration system when one is required.
Two FEVI references for oils and swarf
FEVI OIL 140 (Single-phase)
The FEVI OIL 140 is a single-phase solution for vacuuming and separating compatible liquids and swarf. The official technical data sheet specifies a 140-litre liquid tank, 35-litre stainless-steel separator and discharge pump, with a declared total power of 3,300 W. These data must be compared with actual quantity, viscosity, discharge height and duty cycle.
FEVI 1130 OIL (Three-phase)
The FEVI 1130 OIL is a three-phase solution for prolonged duty cycles consistent with its documentation. The data sheet specifies a 3 kW turbine, 100-litre tank, stainless-steel separator and discharge by airflow reversal. The model is not automatically intended for fine dust, flammable liquids or ATEX areas without a dedicated configuration.
These two examples show that single-phase and three-phase models should not be compared on power alone. Architecture, autonomy, discharge method and operating profile are also different. A test with the actual liquid and swarf can clarify collection time, separation, emptying and the amount of residue retained.
The FEVI oils and swarf category allows comparison between units designed for these mixtures. Before selecting a model, always specify whether fine dust, solvents, flammable liquids or unusual temperatures are present.
Fine aluminium dust: do not confuse it with swarf
Fine dust can remain airborne and reach areas far from the source. Control starts with a hood positioned close to the process and adequate airflow; collecting deposited dust afterwards does not eliminate the exposure or hazard created during generation. The filter and cleaning system must be selected according to the dust load and particle size.
Official OSHA sources note that finely divided aluminium dust can be combustible or explosible under certain conditions. This does not mean that every aluminium swarf application or every department has the same classification, but it does mean that the hazard should not be excluded without assessment. Representative samples, process data, possible ignition sources and area classification must be evaluated by competent persons.
If the risk requires an ATEX system, the industrial vacuum cleaner, dust collector, ductwork, accessories, source-capture system and collection method must be verified together. An antistatic filter or conductive hose does not turn an ordinary machine into an ATEX machine. Do not vacuum sparks, hot material or combustible dust using equipment that is not designed for those conditions.
For deposited fine dust, the FEVI fine dust page provides an initial reference; for airborne dust, an industrial dust collector should be considered; if the area is classified, the assessment continues with FEVI ATEX solutions.
Why using one machine for everything is not recommended
A filter designed for dry dust can become clogged and coated when exposed to emulsion. An industrial vacuum cleaner for liquids and swarf may not have filtration or filter-cleaning systems suitable for a large mass of fine dust. A dust collector designed for a lightweight airborne cloud may not convey long curls or large volumes of liquid. Using a machine outside its intended application compromises performance and may introduce additional risks.
Cross-contamination can also have consequences. Swarf intended for recycling may lose value if mixed with other metals or fluids; an emulsion can become contaminated with dust or incompatible substances; and a fine-dust collection container can receive fragments that damage the system. Separating residues at source improves management, recovery and traceability.
If the same area produces different waste streams, an effective strategy may involve two dedicated units or procedures that prevent incorrect use. Colour coding of hoses and accessories, training, designated parking points and labels specifying permitted materials can reduce the risk of an operator connecting the wrong machine.
| Mistake | Likely consequence | Prevention |
|---|---|---|
| Vacuuming emulsion through a dry-dust filter | Caking, reduced airflow and possible damage | Use a compatible liquids-and-swarf unit |
| Vacuuming fine dust with a non-dedicated unit | Emission, clogging or unmanaged risk | Characterise the dust and select suitable filtration/configuration |
| Conveying long curls through narrow ductwork | Jamming and blockages | Check particle size, diameter and bends |
| Mixing metals or fluids | More difficult recovery and uncertain compatibility | Separate collection and clearly identified procedures |
Suction line, accessories and operating method
Length, diameter, height difference and bends determine the performance available at the pick-up point. With liquids, lifting height and viscosity are particularly important; with dry swarf, particle size and conveying velocity matter; with fine dust, sealing and filter loading become central. A single distance measurement does not fully describe the suction circuit.
The suction nozzle must be suitable for both the material and the area being treated. A narrow lance can reach small gaps but may clog with curls; a wide nozzle requires greater airflow; and a long corrugated hose increases pressure losses. Accessories and spare parts must be approved for the model, particularly where antistatic or ATEX requirements apply.
The operating method must prevent contact with moving parts and avoid extracting from tanks or machinery under conditions that are not permitted. Before intervention, the user must define shutdown, isolation, temperature, guarding and operating procedures. The industrial vacuum cleaner facilitates collection but does not replace safe isolation of the machine tool.
Ten-point application data sheet
For a technical comparison, collect data relating to the most demanding operating cycle and attach photographs or a representative sample whenever possible. Always distinguish measured information from estimates.
- Specify the alloy or material being processed and possible contamination with other metals or coatings.
- Describe the process: cutting, turning, milling, sanding, deburring or another operation.
- Classify the residue as dry swarf, a mixture with liquid, fine dust or a combination.
- Provide minimum and maximum particle size, curl shape and quantity per hour or shift.
- For liquids, specify type, concentration, viscosity, temperature and litres per cycle.
- Define the required autonomy, collection capacity and manageable container weight.
- Record hose diameter, length, bends, height difference and required accessories.
- Specify minutes or hours of vacuuming, frequency, number of shifts and need for prolonged operation.
- Describe discharge and destination of the swarf and liquid, including any return to the production process.
- Attach safety data sheets, dust data and ATEX classification where applicable.
Field testing and maintenance
A representative test should include the actual quantity, swarf and liquid, the planned suction line and sufficient duration to observe filling and separation. Collection time, residue in the separator, discharge quality, any blockages and ease of handling should all be assessed. A demonstration carried out with water or a different material may not reproduce the viscosity and behaviour of the actual application.
Maintenance includes seals, hoses, separator basket, tank, level devices, pump or discharge system, filter and wear parts. A full or dirty separator reduces efficiency; residue left in the tank can degrade or solidify. Procedures should define both frequencies and responsibilities.
If the process changes — for example a new alloy, emulsion, tool or duty cycle — compatibility must be reassessed. Even introducing sanding into an area previously dedicated only to turning creates a new fine-dust stream that cannot automatically be handled by the existing configuration.
Frequently asked questions
Which industrial vacuum cleaner is required for aluminium swarf?
It depends on whether the swarf is dry, wetted with oil or emulsion, or accompanied by fine dust. Particle size, quantity, liquid, suction line and duty cycle determine the correct machine architecture.
Can an oil-and-swarf vacuum cleaner also collect fine dust?
Not automatically. The filtration and filter-cleaning system may not be intended for that type of load. The model's technical data sheet and compatibility with the actual process must be checked.
How are swarf and coolant separated?
Using a basket or separator provided in the industrial vacuum cleaner and sized according to the volume and particle size. If the liquid is to be reused, further process-specific checks or filtration may be required.
Is a single-phase or three-phase model better?
A single-phase model can offer flexibility for intermittent operations; a three-phase model is often considered for prolonged duty. Quantity, distance, discharge requirements, available power supply and operating profile determine the correct comparison.
Is aluminium dust always explosive?
The hazard depends on form, particle size, concentration and operating conditions. Fine dust can be combustible or explosible; a specific assessment and, where applicable, ATEX classification are required.
Can hot swarf be vacuumed?
Only when the documentation and risk assessment permit the temperature and material. Incandescent material or sparks must not be vacuumed using equipment that is not designed for those conditions.
Why does the hose become blocked by swarf?
Possible causes include curls that are too long, unsuitable diameter or bends, insufficient conveying velocity, reduced airflow, internal fittings or excessive quantity. The suction line should be corrected rather than simply increasing power.
Which data does FEVI require?
Alloy, process, residue form and quantity, type and litres of liquid, temperature, suction line, duty cycle, discharge, destination of the collected materials, safety data sheets and ATEX classification where applicable.
Can the same accessories be used for dust and liquids?
Only if they are specified for the model and both applications. Geometry, materials, sealing, electrical continuity and decontamination procedures must all be compatible.
Start from the actual residue to select the correct product family
The most useful enquiry is not simply “industrial vacuum cleaner for aluminium”, but an application sheet separating dry swarf, mixtures with liquids and fine dust. Specify quantity, form, fluid, temperature, suction line, duty cycle and destination of the collected material. FEVI can then determine whether the application requires an oil-and-swarf vacuum cleaner, a solids solution, a fine-dust industrial vacuum cleaner or an industrial dust collector.
See the FEVI solutions for aluminium and PVC and the range of industrial vacuum cleaners for oils and swarf, then contact the FEVI Technical Department with your application data. Compatibility, safety and configuration must be confirmed for the actual application.
Select the correct technology for your aluminium swarf
Contact the FEVI Technical Department to correctly separate oils, swarf and fine dust in your machining processes and select the system with the appropriate filtration configuration.
