Belt-Driven
Low-pressure centrifugal fans VCNN 6.3 and VCNN 8 with belt drive. For general industrial ventilation and process installations. They convey air mixtures free of mechanical impurities, explosion- and fire-safe, at temperatures up to 50 °C. Belt drive is also used when the air mixture is hotter than 50 °C, or when the required duty cannot be met by a fan with the wheel on the motor shaft.
VCNN 6.3 with belt drive
Each curve is drawn for one wheel speed, set by the belt drive; the table gives the installed motor power needed for it. Both axes are logarithmic, as in the catalog.
Performance curves
Technical data
Flow and total pressure: the range covered by each curve.
The position and direction of rotation of the fan are chosen by the customer.
VCNN 8 with belt drive
Each curve is drawn for one wheel speed, set by the belt drive; the table gives the installed motor power needed for it. Both axes are logarithmic, as in the catalog.
Performance curves
Technical data
Flow and total pressure: the range covered by each curve.
The position and direction of rotation of the fan are chosen by the customer.
Changing the speed or the wheel diameter
With a belt drive the wheel can run at speeds other than the standard ones, and the fan parameters change by the fan laws. If you need other parameters without a belt drive, the wheel diameter can be changed instead; at constant speed the parameters change as shown on the right. Index 1 is the known duty, index 2 the new one.
Wheel speed n
Wheel diameter D
For further information or to place an order, contact us.
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