In addition to the Basics of Axial Flow Fans
manual, the following technical information provides a detailed comparison of Hudson
Tuf-LiteŽ and Tuf-Lite IIŽ fans. This technical information also provides
essential data to field personnel.
A Long Tradition
Hudson Products Corporation is the world leader in axial flow fan technology. We
maintain that position through the process of continuous improvement, utilizing
sophisticated computer-aided blade design and state-of-the-art fan blade manufacturing
facilities. Aeronautical design and exhaustive testing at our research center have
produced fan blades with unexcelled features and performance.
The Result: Hudson Tuf-Lite and Tuf-Lite IIŽ Fans
Hudson fans are built with uncompromising attention to quality. They are the
standard for commercial, industrial and utility applications, offering a combination of
performance, strength, endurance, and reliability unmatched by aluminum or competitive
plastic blade fans.
We offer customers a choice of materials. Tuf-Lite fans are
manufactured from epoxy resins, while Tuf-Lite II fans are manufactured from vinyl ester
resins. Both materials provide significantly higher operating temperatures than the
competing polyester resins.
Tuf-Lite and Tuf-Lite II fans also offer blade
configurations specifically designed to optimize air-movement under a variety of
TufLiteŽ Fans and Hudson Experience An Optimum Combination
Coupled with Hudson's 35 years of experience, Tuf-Lite Fans
- Ensure accurate, dependable, and predictable air-flow
- Reduce first-cost horsepower requirements and lower
operating costs through high efficiency design.
- Provide easy installation and dependable operation.
- Optimize the number of blades for cost-effective
- Incorporate one-piece airfoil construction.
- Offer low-noise operation for sensitive environments.
Set Hudson Fans Apart
Tuf-Lite and Tuf-Lite II blades both use the airfoil section that has made Hudson fans
renowned for high efficiency and low noise. By varying the chord width and the angle of
attack along the length of the blade, these fans yield significantly higher performance
than constant-chord-width fans. Increased efficiency provides higher static pressure and
air flow capability, and minimizes horsepower requirements.
Included on every fan assembly, Hudson's center air seal
also boosts efficiency.
Hudson manufactures fan assemblies to precise tolerances.
The installation of these precision assemblies allows minimum tip clearances, further
improving fan efficiency.
Light-weight, high-strength hollow fiberglass construction provides high energy absorption
qualities. These unique characteristics reduce handling problems and ensure increased
safety for operating personnel and surrounding equipment.
Fiberglass composite construction of all Tuf-Lite fans provides the advantages of light
weight and great fatigue resistance.
The leading edge of Tuf-Lite II fans is constructed with a space-age ceramic material.
This patented, built-in Tuf-Edge surface prevents erosion caused by the impingement
of water droplets and dirt.
Formulated toughened resins used for Tuf-Lite blades resist corrosion better than
polyester or aluminum materials.
All fan blades are moment-balanced to a master standard, so any single blade can be
replaced by a blade of like size and type. Matched sets are not required.
Small fan hubs are dynamically balanced, while large hubs
are statically balanced for smooth, vibration-free operation.
All Tuf-Lite II blades are protected by a tough, high-solids polyurethane coating that can
resist years of sunlight without harmful effects.
Hudson Fan Hubs
Quality and Strength to Match Tuf-Lite Blades
Hudson hubs are simple in construction and incorporate durable materials for long life.
Designed to accommodate either straight or tapered shafts, hubs are constructed of
galvanized steel, ductile or cast iron, and corrosion-resistant aluminum. Fasteners are
made of galvanized steel, stainless steel, or monel.
All hubs have tapered bushings with a built-in feature to
positively locate the hub on the shaft. Fans smaller than 16 feet in diameter are
available with 4 to 8 blades. Larger fans are available with many combinations of blade
counts to optimize each air-moving application.
Variable Air Flow
Optimum process temperature control, continuous power savings, and, where necessary,
freeze protection are provided by either of Hudson's Auto-Variable or Variflo
technologies. Auto-Variable hubs control air flow by varying the blade pitch angle,
whereas Hudson Variflo technology achieves the same result by varying the fan speed.
Hudson's commitment to Total Quality Management assures uncompromised attention to detail
in the manufacturing of Tuf-Lite Fans and components.
Manufactured in modern facilities by workers dedicated to
continuous improvement, Hudson fan blades are highly consistent.
Corrosion/erosion resistance, durability, safety and
efficient performance are a few of the characteristics that make Hudson's light-weight,
precision balanced fans the worldwide symbol of excellence and superior quality.
Tuf-Lite Fans are available with:
- A variety of non-standard finishes and materials for custom
- Metric and non-standard diameters.
- Static pressure capabilities as high as 2 inches of water.
- Metric and non-standard hub bores.
Hudson's fans and fan components are immediately available from inventory for delivery to
any location in the world. Prompt delivery and service are standard operating procedures.
We respond rapidly to emergency situations, shipping parts
and components and/or supplying service to any location within hours.
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