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Technical requirements and scope of centrifugal fans

Wuxi JN Fan Co.,Ltd | Updated: Jan 30, 2019

The bearing seat and the base of the centrifugal fan should be tightly jointed. The horizontal non-leveling should not exceed 0.2/1000. The level should be measured on the main shaft. The horizontal non-horizontal bottom should not exceed 0.3/1000. Use the level to face the level of the bearing seat. Measured on.

Before the bearing of the centrifugal fan is scraped, the rotor shaft line and the shaft axis of the casing should be corrected first, and the gap between the impeller and the inlet and the gap between the shaft and the shaft hole of the rear plate of the casing should be adjusted to meet the equipment. The provisions of the technical documents.

When assembling the main shaft and bearing bush of the centrifugal fan, it should be inspected according to the technical documents of the equipment. An interference of 0.03 to 0.04 mm should be maintained between the bearing cap and the bearing shell (measure the outer diameter of the bearing shell and the inner diameter of the bearing housing). When assembling the fan casing, the position of the casing should be corrected based on the rotor shaft line and the axial and radial clearance between the impeller inlet and the casing inlet should be high-speed to the range specified in the equipment technical documents. Also check that the anchor bolts are tight.

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