QUALITYProducts.
SINCE 1948.

Heavy-Duty Industrial Ventilation
Since 1948, Triangle Engineering has continuously evolved its industrial ventilation solutions to meet and exceed modern performance demands. The TAB Series Tube Axial Fan reflects our unwavering commitment to innovation, reliability, and user-centric design—featuring rugged, all-welded steel construction, high-efficiency airfoil blades, and a belt-drive setup that shields motor components from harsh or contaminated airstreams. Built for demanding industrial processes, the TAB Series combines robust materials and proven engineering to deliver large-volume airflow while maintaining quiet, efficient operation.

With standard models from 24″ through 48″ diameters, the TAB Series suits a variety of heavy-duty ventilation needs—from paint spray booths and mixing rooms to booster fan setups and warehouse exhaust. Each fan undergoes a durable powder coat finish to withstand corrosive or harsh conditions, while optional accessories—like inlet/outlet guards, variable-speed drives, and companion flanges—provide further customization.

Key Features & Specifications of Our TAB Series

Sizes & Models (24″–48″)

• Standard Diameters: 24″, 30″, 36″, 42″, and 48″
• Airflow Range: 6,250 – 43,700 CFM
• Custom Configurations: We can produce diameters up to 60″ upon request (in 1/4″ increments)
• High-efficiency cast aluminum airfoil propellers for optimum performance

Construction & Finish

• All-welded heavy-gauge steel housing with integral inlet/outlet flanges
• Belt-drive motor and bearings fully isolated from the airstream to reduce contamination and wear
• Polyester powder coat finish for enhanced corrosion protection

Motor Types, Voltages & Horsepower Range

• Standard: Totally Enclosed (TE), Hazardous Location (HL)
• Non-Standard: Chemical duty, 50 Hz, Arctic duty, High ambient, IEEE 841, Electronically Commutated (ECM), and more
• Standard Voltages:
  • Single-phase: 115V, 230V
  • Three-phase: 230V, 460V
  • (Additional options: 277V, 208V, 415V, 575V)
• Horsepower Offerings: 1/2 HP, 3/4 HP, 1 HP, 1-1/2 HP, 2 HP, 3 HP, 5 HP, 7-1/2 HP, 10 HP (higher HP available)

Drive Options

• Belt-drive featuring:
  • Heavy-duty air handling quality pillow block bearings
  • Cast iron sheaves
  • Extended lubrication lines for straightforward servicing
  • Precision-balanced sheaves
• Jack-screw tension adjustment for easy belt maintenance
• Optional explosion-proof or severe-duty motors for specialized environments

Operating Range

• Temperature: Up to 110°F (standard for most TE motors; contact us for higher temp options)
• Static Pressure: Up to 1.5″ w.g. depending on model (consult performance tables for exact selection)

Mounting Flexibility

• Flanged ends for horizontal, vertical, or inline duct installations
• Optional mounting legs and companion flanges for simplified placement

Optional True Reversible Symmetrical Airfoil Blades

Each cast aluminum blade is designed to move air with minimal drag and no loss of performance, ensuring near-identical CFM whether supplying or exhausting.

Accessories & Options

Companion Flanges

• Match fan flanges to existing duct dimensions, ensuring seamless airflow transitions.

Inlet & Outlet Guards

• Heavy-gauge wire guards for low-mounted or open installations where additional safety is required.

Maintenance Access Door

• Allows quick inspection without removing the fan from service.

Variable-Speed Drives

• Use adjustable-pitch motor pulleys or VFD-compatible motors for refined airflow control and potential energy savings.

Hazardous Location or High-Temperature Components

• Motors and bearings can be upgraded for environments with extreme heat or flammable/explosive vapors.

Mounting Legs

• Formed angle legs bolt to the fan housing flanges to allow attachment to floor, ceiling, or wall

Motor Cover

• Optional protective enclosure that shields the motor from debris or airborne particles, extending motor life and reducing maintenance frequency. Acts as a belt and pulley guard to meet OSHA requirements.

Common Uses & Applications for Tube Axial Fans

• Paint Booths & Mixing Rooms
  Isolate motor and drive components from overspray and chemical-laden air.
• Industrial Exhaust & Supply
  Rapidly exchange large volumes of air in manufacturing plants, foundries, and warehouses.
• Process Cooling
  Boost airflow around heat-generating machinery, enhancing operational safety and comfort.
• Booster Fans
  Augment existing HVAC or duct systems to overcome static pressure in lengthy or complex duct runs.

Why Choose the TAB Series Fans

• Durability & Reliability
  All-welded, heavy-gauge steel and a robust belt-drive arrangement ensure extended product life under severe conditions.
• Non-Overloading Airfoil Design
  Cast aluminum blades minimize turbulence and noise while preventing motor overload, even at varying static pressures.
• Maintenance-Friendly
  Easy belt tensioning, optional grease lines, and an accessible drive assembly simplify servicing.
• Adaptable Configuration
  Multiple sizes, motor types, and accessories let you tailor the fan to specific industrial challenges.
• Long-Standing Heritage
  Built on Triangle Engineering’s over 70 years of expertise in industrial ventilation solutions.

Comprehensive Customization & Engineering Support

At Triangle Engineering, we understand that every ventilation scenario has unique requirements. That’s why we provide a broad range of tailor-made solutions to ensure your TAB Series Tube Axial Fan fits seamlessly into your specific application. Beyond standard sizes and finishes, we work closely with you to engineer fans that excel in performance, reliability, and longevity—even in the most demanding conditions.

Examples of Our Custom Services

• Non-Standard Diameters
  Need a size outside our standard range? We can fabricate diameters in 1/4″ increments to accommodate unusual duct dimensions or specialized performance requirements.
• Motor and Drive Configurations
  We offer an extensive selection of motors (e.g., explosion-proof, two-speed, VFD-rated) and custom horsepower options to suit your exact environment. From high-temperature rated motors to ECM solutions, we’ll help you choose the ideal drive package that meets your performance and safety needs.
• Special Bolt Patterns and Flange Sizes
  If your facility has existing bolt circles or duct layouts, we can align our fan housings to match precisely, simplifying installation.
• Custom Housing Lengths
  For retrofits or tight spaces, adjusting the fan’s overall length allows integration without major structural modifications.
• Unique Coatings and Materials
  Beyond standard steel construction, we offer aluminum and stainless steel options, plus specialized coatings for high-corrosion or food-grade settings.
• True Reversible Symmetrical Airfoil Blades
  Our optional symmetrical blades maintain near-identical CFM for supply or exhaust modes, reducing operational complexity and boosting versatility.

Whether you need minor tweaks to our standard designs or a fully custom solution, our engineering team is ready to collaborate on every detail. We’re committed to delivering a ventilation system that meets your performance, safety, and compliance targets.

Made in the USA: Quality & Reliability

All TAB Series Tube Axial Fans are proudly manufactured in the USA with a blend of domestic and foreign components, reflecting our commitment to quality, reliability, and continuous improvement.

Related Triangle Engineering Products

• TAD Series Direct Drive Tube Axial Fans
  Rugged all-welded fans with a simplified direct-drive design, ideal for reducing component wear and maintenance.
• FHI Series Panel Fans
  Engineered for direct or belt drive in heavy-duty exhaust/supply applications.
• JBX Series Roof Mount Exhaust Fan
  Belt-driven roof-mount exhaust fans with the motor outside of the airstream, for large-volume industrial ventilation.
• JBI Series Roof Mount Exhaust Fan
  Belt-driven roof-mount exhaust fans with the motor inside of the airstream, for large-volume industrial ventilation.
• HHC Series Hooded Roof Mount Exhaust or Supply Fans
  Belt-driven or Direct-driven roof-mount exhaust or supply fans.

Ready to Upgrade Your Ventilation? Contact Us

Talk with our experts about how the TAB Series Tube Axial Fan can enhance airflow in your operation. Whether you need a robust exhaust solution for hazardous fumes or a high-volume booster for existing duct systems, we’ll configure a TAB model to match your exact performance and safety requirements.

Triangle Engineering—delivering innovative air movement products that stand the test of time, environment, and performance demands.