Usage The TDJ series low-noise tunnel fan is a dynamic and tunable two-stage impeller counter-rotating. Two special impellers equipped with imported SKF Swedish bearings directly drive two opposite impellers. The TDJ series low-noise tunnel axial flow fan is also movable and can be calibrated for single-pole impeller rotation. A single-stage impeller is directly driven by a special motor equipped with imported SKF Swedish bearings.
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