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Experts Advise Against WD40 for Pulley Maintenance Recommend Regreasing

2026-01-29

Is your pulley making annoying noises or feeling stiff when it rotates? Many people’s first instinct is to grab a can of WD-40 and spray it, thinking it’s a quick and easy solution. However, this could be a serious mistake. While WD-40 does have some cleaning and lubricating properties, it doesn’t provide long-lasting lubrication. Worse, it can dissolve the existing grease inside the pulley, accelerating wear and tear. Imagine stripping away a protective layer—this is essentially what happens when you spray WD-40, and over time, it significantly shortens the pulley’s lifespan.

So, what’s the correct solution? The answer is simple: reapply proper grease . The bearings inside a pulley require the right type of grease to operate smoothly. When the grease dries out, degrades, or becomes contaminated, it needs to be replaced. Reapplying fresh grease not only reduces friction and noise but also extends the pulley’s durability.

Here’s how to do it properly:

Remove the pulley and clean out the old grease using a clean cloth or a specialized degreaser.
Choose the right grease for the pulley’s bearings. Different bearings require different types of grease, so consult the equipment manufacturer’s recommendations.
Apply new grease evenly inside the bearing, being careful not to overfill it, as excess grease can create unnecessary pressure.
Reassemble the pulley , and you’ll notice smoother, quieter operation.

Next time your pulley acts up, resist the urge to reach for WD-40. Taking the time to reapply grease is the smarter choice—it protects your equipment and saves you money in the long run.

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Experts Advise Against WD40 for Pulley Maintenance Recommend Regreasing

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Tapered Roller Bearings

Deep Groove Ball Bearing

Wheel Hub Bearing

Clutch Release Bearing

Cylindrical Roller Bearing

Mixer Bearing