Backward Inclined Industrial Centrifugal Fan 1297m3/H-83305m3/h

High capacity exhaust fan backward inclined centrifugal fan volute casing bearing grease replace bearing

Fan main shaft

⑴ There shall be no cracks, abrasion marks and damage at the spindle and neck. If there are abrasions and damage. If there are abrasion marks and damage, under the condition of not affecting the use, apply the group file to repair, and then use the oil soaked emery cloth or oil stone to polish smooth. Individual places of the shaft neck are injured, and the depth should not be greater than 0.05 ~ 0.10 mm. In the non-working face area of the shaft, individual local defects are allowed, but the depth must be within 1 ~ 1.5 mm. Sharp pits and edges must be removed to avoid stress concentration.

⑵ Cracks or surface cracks are not allowed at the step section of the shaft.

⑶ Wear of the surface of the shaft neck.

If the wear is not greater than 0.5 mm, grinding or turning can be carried out, and the method of repairing the sliding bearing can be used to compensate.

If the rolling bearing is used, according to the wear of the shaft neck surface, spray electroplating and other methods can be considered for repair, but the repaired shaft neck must meet the tolerance of the rolling bearing and the surface roughness is not lower than that.

Key Features 

• Air Temperature: 20~1000 Celsius degree

• Material: Cast Iron, Carbon Steel, Stainless Steel.

• Efficiency: 80%-90%

• Impeller diameter: 90~3500 mm 
• Speed of mainshaft: 560~2900 rpm
• Pressure range: 3000~25425 Pa
• Flow range: 1297~83305 m3/h
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Please advise us the USAGE and following Parameter.Our engineering Dept will recommend the most suitable product for you.