| MODELS BDT /DDT- BELT DRIVE/DIRECT DRIVE TUBEAXIAL DUCT FANS
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técnicas del producto.
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Application
Breidert’s tubeaxial line offers the widest range of sizes, horsepower and performance in the industry. Models BDT are high capacity tubeaxial fans rated from 1,320 to 59,800 CFM, with static pressure capability up to 1-1/4”. Models DDT are high capacity tubeaxial fans rated from 390 to 43,000 CFM, with static pressure capability up to 1-1/4”. Both Models
BDT and DDT are used to exhaust air from or supply air to such typical commercial and industrial applications as general building ventilation, enclosed garages, paint spray booths, heat and smoke ventilation systems and other applications where air is moved through a duct system against moderate static pressure.
Model BDT - Belt drive Models BDT are especially suited to handle fumes, vapors, steam, dust, smoke and contaminated or heated air to 200˚ F. They
are available in larger, higher capacity sizes and offer ease in adjustment of fan performance by reducing the fan RPM with adjustable motor sheaves. (Optional on 5HP and larger). Total access to the bearings and shaft is possible with the BDT’s unique removable cover. This cover can be removed for optimum performance when clean and untempered air is present.
Model DDT - Direct drive Models DDT are best used for exhausting or supplying relatively clean ambient temperature air. They are available in smaller sizes for areas with reduced airflow needs and require practically no maintenance.
Motors
• One year motor warranty.
• Brands are nationally recognized and locally serviced.
• Open drip-proof construction is standard.
• Premium-efficiency, explosion proof, totally enclosed fan
cooled (TEFC) and corrosion duty motors can be specified.
Entire Fan Unit
• Factory assembled and tested prior to shipment for quality assurance. |
Construction/Specification
Checklist Fan
Housing
• Heavy-gauge rolled steel construction.
• Rolled steel flange reinforcement on each end.
• Continuous welded seams.
• Belt and bearing enclosure (Model BDT Only).
• Removable belt and bearing cover for ease of maintenance (Model BDT Only).
Propeller (size 12 - 21)
• Die formed steel blades.
• Steel hub plate/bushing.
• Heavy-duty construction.
• Statically and dynamically balanced.
• Aluminum blades are optional.
Propeller (BDT size 24 - 54) (DDT size 24-48)
• Three, four or six wing airfoil aluminum or heavy-gauge steel blades.
• Steel or aluminum hub plate with steel taper lock bushing.
• Blades are pitched for optimum efficiency.
• Statically balanced (Model BDT).
• Statically and dynamically balanced (Model DDT).
Drives (Model BDT)
• Sized for minimum 150% of drive horsepower.
• Single belt adjustable pitch sheaves through 3HP.
• Multiple belt fixed pitch sheaves through 15HP.
• Adjustable pitch sheaves are optional above 3HP.
• Adjustable tension rods for belt adjustment.
• Nonstatic oil resistant v-belts.
• Keyed, turned, ground and polished shafts with an anti-rust coating.
Bearings (Model BDT)
• Bearings are designed for minimum 200,000 hour life, L50.
• Cast iron self-aligning pillow block ball bearings.
• Bearings are sealed and prelubricated. |
