Extraction tables

Downdraft Table

When industrial processes generate dust, fumes, or airborne contaminants, a downdraft table provides essential protection for workers and production environments. Gram Clean Air's comprehensive range of extraction tables delivers efficient dust collection and ventilation solutions for metalworking, welding, grinding, sanding, and numerous other applications where air quality and worker safety are paramount.

Complete Downdraft Extraction Solutions for Industrial Applications

Our industrial downdraft table systems represent decades of engineering expertise in process ventilation. Whether you need a downdraft sanding table for woodworking operations, a welding downdraft table for metal fabrication, or a cutting table with extraction for plasma operations, our product range delivers reliable performance across diverse industrial sectors.

Each downdraft extraction table in our portfolio features carefully engineered airflow patterns that capture contaminants at the source. The downdraft bench design ensures evenly distributed extraction across the entire work surface, eliminating the need to constantly reposition extraction equipment. This fundamental approach to industrial ventilation table design maximizes both efficiency and operator convenience.

Downdraft Table Product Categories

EXTRACTION TABLE TYPE UF

Our foundational extraction table with standard extraction by table top serves as a versatile solution for bonding, varnishing, grinding, polishing, welding, or manual cutting operations. Available in lengths from 1000 to 3000mm and depths of 1000 or 1250mm, these tables accommodate various workspace requirements.

Process air is led in through table ribs, backwall or hood and out through outlet at table end. Connection can optionally be placed in the right or left side with coverplate in the opposite end. Dust is collected in dust container in bottom end, finished in RAL 7042/7011 (structure) colours.

Efficient extraction is achieved through extraction in connection with work, where the table ensures evenly distributed airflow. The operator must only place the workpiece on the table - the suction must not be moved according to the task.

Easy mounting, connection and operation characterize this range. The table is delivered completely assembled. Only central fan and filter unit must be connected and adjusted. Connection of piping to table is optional on either the right or left side.

The UF series is available in several configurations:

• UF-B: Backwall with extraction
• UF-BS: Backwall with extraction as well as top and sides without noise damping
• UF-BS-ISO: Backwall with extraction as well as top and sides with noise damping
• UF-EM: Backwall with slanted top with extraction 30° angled, light in top, lamellas along the side as well as on/off-switch for table light, standard with steel slats

EXTRACTION TABLE TYPE UFH-E

The electric height-adjustable extraction table represents our ergonomic solution for standing and sitting work. This energy-efficient downdraft table features electric height-adjustment from 638-938mm, enabling operators to find their ideal working position throughout the day.

Available in lengths of 1000, 1500, and 2000mm with a depth of 1100mm, the UFH-E provides a tabletop suction area depth of 824mm. The design incorporates an extra deep working area of 950mm, with carrying capacity up to 200kg per length meter when evenly spread.

Process air enters through table ribs or backwall, ensuring the user maintains a clean air supply. Using recommended air volumes, pollution can effectively be removed within 400mm over the table surface, with effective catching speeds up to 100mm from the front and sides.

Available configurations include UFH-E (tabletop extraction), UFH-E-B (backwall extraction), UFH-E-BS (backwall with top and sides without noise damping), and UFH-E-BS-ISO (backwall with top and sides with noise damping).

EXTRACTION TABLE WITH FAN TYPE UFPT

This high-efficiency downdraft table integrates automatic compressed air cleaned filtration and fan systems, creating a complete standalone solution. Ideal for welding, grinding, and similar dust-generating processes, the UFPT eliminates the need for separate central extraction systems.

Available in 1000, 1500, and 2000mm lengths with 1100mm depth, this dust collection downdraft table features height adjustment from 690-938mm and supports maximum loads of 150kg per meter. The integrated VL 1150 fan (3x400V, 50Hz, 2-pole) delivers reliable performance with self-cleaning backward-directed blades.

Filtration utilizes compressed air cleaned filter cartridges meeting dust class M standards. Filter cleaning activates automatically via front-operated push button, with cleaning requirements monitored through integrated differential pressure manometer.

EXTRACTION TABLE WITH FAN TYPE UFPR

The universal metalworking downdraft table with built-in fan handles glueing, grinding, polishing, and welding applications. Available in lengths from 1000 to 3000mm and depths of 1000 or 1250mm, the UFPR series provides complete extraction solutions.

Air filtration occurs through vertical-placed Staubmaster cartridge with Roto-cleaning system that mechanically vibrates filter pleating. Cleaning activates manually via handle on table front or through automation controlled by differential pressure and timer. Filtered air exits via table-side outlet, with options for recirculation silencer or ducted connection.

EXTRACTION TABLE TYPE UBP

Our ergonomic extraction tables feature height-adjustable leg brackets and three-sided access. Available in lengths from 1000 to 2500mm and widths of 1000 or 1250mm, these grinding tables deliver flexible workspace solutions. Standard wooden slats support loads up to 150kg per meter.

Specialized Tables

CUTTING TABLE TYPE PB (PB 550-2600): Manual cutting tables with water boxes for absorbed dust during plasma, flame, and laser cutting operations. Features removable comb system with 30x6mm cutting grid profiles and external earth connection.

MIXING TABLE TYPE BB (BB 800-1200): Extraction by table plate, top, and floor extraction for printing ink, paint, and glue applications. Features loosely placed perforated enamelled steel table plate with hidden distribution chamber for lighter and heavier gases.

EXTRACTION TABLE TYPE BZ (BZ 800-1200): Variant of BB series with Z-line filter in back wall (filter class G4), easily exchanged from front without tools.

WELDING TABLE TYPE SBL: Educational welding table with bolted profiles for easy assembly, featuring 10mm steel plate top.

Applications Across Industries

Our industrial extraction table solutions serve metalworking facilities, woodworking shops, educational institutions, and manufacturing operations. From downdraft table sanding applications to welding downdraft table configurations, each system addresses specific contamination challenges while maintaining optimal air filtration downdraft table performance.

Experience Superior Air Quality Control

Gram Clean Air's downdraft table systems combine proven extraction technology with practical design features that enhance both safety and productivity. Contact our technical team to identify the optimal table extraction solution for your specific application requirements.

Common Questions About Downdraft Tables

To help you make informed decisions about downdraft extraction solutions for your facility, we've compiled answers to the most frequently asked questions from our customers. These insights address selection criteria, operational considerations, and maintenance requirements for industrial extraction tables.

What is a downdraft table and how does it improve workplace safety during metalworking operations?

A downdraft table is an industrial extraction table designed to capture dust, fumes, and particulate matter directly at the source by drawing contaminated air downward through a perforated work surface. Unlike overhead extraction systems, downdraft tables create a controlled airflow pattern that pulls contaminants away from the operator's breathing zone before they can disperse into the workspace.

During operations such as grinding, sanding, welding, and cutting, the downdraft extraction table generates negative pressure beneath the work surface, ensuring that hazardous particles and fumes are immediately captured and routed through a filtration system. This design is particularly effective for processes like plasma cutting, flame cutting, and laser cutting, where heavy particulate generation occurs. The table extraction system significantly reduces airborne exposure to metal dust, welding fumes, and grinding particles, thereby improving compliance with occupational health and safety standards while protecting workers from respiratory hazards.

How do I choose between a standard downdraft table and a high-efficiency downdraft table for my specific application?

The selection between a standard and high-efficiency downdraft table depends primarily on the type and volume of contaminants generated by your specific processes. For light-duty applications such as occasional sanding or bonding operations with minimal dust generation, a standard downdraft sanding table with basic filtration may suffice. However, for intensive metalworking operations involving continuous grinding, welding, or cutting processes, an industrial downdraft table with enhanced filtration capabilities is essential.

High-efficiency downdraft tables incorporate multi-stage filtration systems capable of capturing fine particulate matter below 1 micron, which is critical for welding fumes and grinding dust from operations like stainless steel fabrication. These systems typically feature higher airflow capacity (measured in cubic feet per minute), larger filter surface areas, and more robust dust collection mechanisms. When evaluating your needs, consider the following factors: the material being processed, the frequency and duration of operations, the type of contaminants generated (dust versus fumes), and your facility's air quality requirements. For applications involving varnishing or bonding, you may also require specialized filtration to capture volatile organic compounds in addition to particulate matter.

What maintenance is required for downdraft extraction tables to maintain optimal performance?

Proper maintenance of your downdraft table is essential for sustained extraction efficiency and long-term operational reliability. The primary maintenance requirement involves regular monitoring and replacement of filtration media. For dust collection downdraft tables, pre-filters should be inspected weekly and replaced when pressure differential indicators show resistance buildup or when visual inspection reveals significant loading. Main filters typically require replacement every 6-12 months depending on usage intensity, though this varies considerably based on the specific processes performed.

For welding downdraft tables and grinding tables, where fine particulate and metallic dust accumulation is more aggressive, filter maintenance intervals may be shorter. Many industrial extraction tables incorporate differential pressure gauges that provide real-time monitoring of filter condition—when the pressure drop across the filter exceeds manufacturer specifications, replacement is necessary to maintain designed airflow rates. Additionally, the perforated work surface should be cleaned regularly to prevent blockage of extraction holes, and any accumulated debris in collection drawers or hoppers should be removed weekly. Energy-efficient downdraft tables often feature automated filter cleaning systems (such as pulse-jet mechanisms) that extend filter life and reduce maintenance frequency. We recommend establishing a documented maintenance schedule based on your specific usage patterns to ensure consistent ventilation performance and workplace safety.

Can a single downdraft bench handle multiple processes, or do I need dedicated tables for different operations?

A properly specified industrial ventilation table can accommodate multiple processes, provided the filtration system is designed to handle the most demanding contaminant type generated across all applications. Modern air filtration downdraft tables offer versatile configurations that can effectively manage various operations including sanding, grinding, welding, and cutting on the same work surface. However, the key consideration is ensuring the filtration media is appropriate for the full range of contaminants produced.

For example, if you perform both welding and sanding operations, your metalworking downdraft table must be equipped with filters capable of capturing both fine welding fumes (typically 0.1-1 micron) and coarser sanding dust (10-100 microns). This typically requires a multi-stage filtration approach with both pre-filters for larger particles and high-efficiency final filters for submicron capture. Some operations may be incompatible on a shared table—specifically, processes involving varnishing or other wet materials may require dedicated exhaust tables to prevent filter contamination or fire hazards when combined with spark-generating operations like plasma cutting or flame cutting. When consolidating multiple processes on one extraction table, consult with ventilation specialists to ensure adequate airflow capacity, appropriate filtration selection, and compliance with safety standards for all intended applications. In many cases, investing in a higher-capacity industrial downdraft table with modular filtration provides greater operational flexibility than maintaining multiple dedicated units.

Ready to improve your facility's air quality? Contact Gram Clean Air's technical specialists today to discuss your specific downdraft table requirements and discover the optimal extraction solution for your industrial processes.