What type of oil should be added to the bearing housing of a centrifugal fan?
Time:Jan 7th, 2026
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1. Oil Selection: Lubricating oil primarily lubricates the bearings and bearing housing, reducing friction and achieving a cooling effect. Customers frequently inquire about the type of oil to add. Here are some options: If the manufacturer recommends a specific type of lubricating oil, purchase accordingly. If not, refer to the following requirements: Use N32 machine oil in winter and N46 machine oil in summer (GB/T3141-1994).
2. Oil Quantity Control: The amount of oil added must strictly adhere to the standard; overfilling is the most common mistake.
The oil level should be determined by the upper and lower oil level marks on the bearing housing. Ensure the oil level is between the upper and lower marks (Note: The bearing housing has a transparent oil level sight glass with upper and lower markings; the oil level should generally be maintained between these two marks). Do not add too much lubricating oil, otherwise it will cause oil leakage from the bearing housing.
III. Regular Inspections During routine inspections, observe whether the oil level is normal and whether the oil is clear. It is recommended to periodically (e.g., annually or based on operating hours) open the bearing housing to check its condition and replace the lubricating oil promptly according to its condition.
