Francis centrifugal axial flow fan maintenance, blower wheel bearing replacement offer

Dongcheng District, axial-flow centrifugal fan Francis maintenance, blower wheel bearing replacement offer installation considerations 1. Install centrifugal fan overall unit should be placed directly on the basis of leveling with a pair of oblique horn. 2, centrifugal fan site assembly and machining surface on the base should be properly protected, there should be rust or operation, when the base is placed on the basis of application of the paired oblique horn leveling. 3, the bearing should be closely engaged with the base, not the level should not exceed longitudinal 0.2 / 1000, measured with a spirit level on the spindle, horizontal non-horizontal bottom should not exceed 0.3 / 1000, at the level of the equatorial plane bearing the standard instrument measurement. 4, bearing scrape preceded the rotor axis and the housing axis correction, while adjusting the gap and the gap between the rear side of the shaft hole axis and the chassis between the impeller and the intake port so that it conforms to the device technology specified file. 5, when the shaft and bearing assembly, equipment and technology should be required to file for inspection. 0.03 to 0.04 mm should be maintained between the bearing cap and bearing interference (measured bearing outer diameter and housing inner diameter). 6, the fan housing assembly shall be the basis of the rotor axis alignment cabinet position and the air inlet of the impeller housing intake port axial and radial gap between the high-speed technology to the device file specified range inside, and check the anchor bolts are tightened. The gap value of technical documents such as equipment not specified, general axial clearance should be 1/100 ,, impeller diameter radial clearance should be evenly distributed, its value should impeller diameter of 1.5 / 1000 1-3 / 1000 (Outside diameter of the small whichever is greater). Seeks to adjust the gap smaller value to increase the efficiency of the fan. 7, fans looking positive, the different axes of the fan shaft and motor shaft: radial position shift should not be more than 0.05 mm, tilt should not exceed 0.2 / 1000. 8, centrifugal fans rolling bearing assembly, the different axes of the two bearing frame bearing bore, can be installed after the rotor to rotate flexible prevail. Dongcheng District, axial-flow centrifugal fan Francis maintenance, blower wheel bearing replacement offer