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 TAD 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 direct-drive arrangement that simplifies maintenance and reduces downtime. Built for demanding industrial processes, the TAD Series combines robust materials and proven engineering to deliver large-volume airflow while maintaining reliable, efficient operation.

With standard models from 24″ through 48″ diameters, the TAD 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 TAD Series

Sizes & Models (24″–48″)

• Standard Diameters: 24″, 30″, 36″, 42″, and 48″
• Airflow Range: 5,730 – 57,100 CFM
• Custom Configurations: We can produce diameters up to 60″ upon request (in 1/4″ increments) for specialized applications
• High-efficiency cast aluminum airfoil propellers for optimum performance

Construction & Finish

• All-welded heavy-gauge steel housing with integral inlet/outlet flanges
• Direct-drive motor arrangement for reduced maintenance and optimal performance
• 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, 15 HP (higher HP available)

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 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 or VFD-compatible motors for refined airflow control and potential energy savings.

Hazardous Location or High-Temperature Components

• Motors and bearings 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.

Common Uses & Applications for Tube Axial Fans

• Welding Booths & Fume Extraction
  Eliminate airborne contaminants and reduce operator exposure to welding fumes in fabrication settings.
• 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 TAD Series Fans

• Durability & Reliability
  All-welded, heavy-gauge steel and a robust direct-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
  A direct-drive design eliminates belts and sheaves, reducing component wear and simplifying service intervals.
• 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 TAD 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 design 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.
• 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 exact performance, safety, and compliance targets.

Made in the USA: Quality & Reliability

All TAD 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

• TAB Series Belt Drive Tube Axial Fans
  Rugged all-welded fans with a simplified belt-drive design.
• 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 TAD 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 TAD 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.