Bush scrape preceded axis rotor axis and the housing correction, while adjusting the gap and the gap between the centrifugal fan side of the shaft hole after the impeller shaft and housing between the air inlet to conform equipment technology specified file. Spindle and bearing assembly, equipment and technology should be required documents to be checked. Should be maintained between 0.03 to 0.04 mm in the bearing cap and bearing interference (measure the outside diameter of the bearing and the bearing inner diameter). Centrifugal fan casing assembly centrifugal fan noise should be the basis of the rotor axis alignment cabinet position and the air inlet of the impeller housing axial and radial clearance between the air intake to the high-speed equipment technical documents within the range while checking the anchor bolts are tightened. The gap value technical documents such as equipment not specified, generally axial clearance should be 1/100 impeller diameter, radial clearance should be evenly distributed, its value should be the impeller diameter of 1.5 / 1000 2-3 / 1000 (OD small ones whichever is greater). Seeks to adjust the gap smaller value, in order to improve efficiency of the fan. At present, China's stone processing enterprises, energy-saving method for regulating the sale of the older fans are centrifugal fans, generally use throttle. When using the throttle, the fan flow, mainly by adjusting the throttle valve or damper to be adjusted, throttle large fan, even at low load throttle more than fifty percent, however, due to throttling loss and deviation zone run efficiently, energy waste is very serious. And if you adjust the fan speed, it can be canceled either throttling losses caused by the centrifugal fan cooling, and can ensure the fan is always running in the high zone, so you can achieve significant energy savings. It can be said to run the fan by adjusting the fan speed is an effective way of saving, which also reflects the building materials industry in a new production of the current trend. Cooled centrifugal fans, centrifugal fans Xiaodian, nagorye blower provided by the Shanxi nagorye blower limited liability company. Shanxi nagorye Blower Co., Ltd. (www.sxgfj.cn) strong, credible, Shanxi Xinzhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead nagorye blower and you hand into the brilliant, for a better future!