1. Why Is Your Fan Making Noise?
If your fan suddenly starts making noise, the most common cause is lack of lubrication in the motor shaft.
Typical noise symptoms include:
- Grinding or rattling sounds
- High-pitched squeaking
- Increased vibration
In most cases, this happens because the internal shaft is dry or worn.
2. Where Is the Lubrication Point on a Fan?
The key part you need to find is the motor shaft (rotor shaft).
This is usually located:
- Behind the fan blades
- Inside the motor housing
- Connected to the spinning axis
👉 Important:
You don’t apply oil randomly — it must go directly onto the shaft or bearing area.
3. Step-by-Step: How to Locate the Oil Injection Point
Step 1. Unplug the Fan (Safety First)
Always disconnect power before disassembling.
Step 2. Remove the Front Grill and Blades
- Unscrew or unclip the front cover
- Carefully remove the fan blades
This exposes the central shaft.
Step 3. Identify the Motor Shaft
Look for:
- A metal rod in the center
- The point where the blade connects
- Small gaps around the shaft (bearing area)
Step 4. Apply Lubricant Properly
- Use light machine oil (NOT cooking oil)
- Apply 1–2 drops directly onto the shaft
- Rotate the shaft manually to spread the oil
Step 5. Reassemble and Test
- Put blades and grill back
- Turn the fan on
If done correctly, the noise should be significantly reduced.
4. Common Mistakes to Avoid
- ❌ Applying too much oil → attracts dust
- ❌ Using the wrong oil (like WD-40 as a long-term solution)
- ❌ Oiling external parts only (won’t fix the problem)
- ❌ Skipping cleaning before lubrication
5. When Lubrication Doesn’t Fix the Noise
If the noise continues, the issue may be:
- Worn-out bearings
- Bent shaft
- Motor damage
In this case, repair or replacement may be necessary.
6. Quick Summary
- Fan noise is usually caused by a dry motor shaft
- The lubrication point is inside the motor, at the shaft/bearing area
- Proper oiling can fix most noise issues in minutes