When to Clean vs. Replace

Bearings slow down for two reasons: dirt/grit packed into the races, or worn/rusted steel balls. Cleaning fixes the first problem. Nothing fixes the second — those bearings need replacing.

Clean your bearings if:

Wheels spin freely but slow down quickly (dirt damping the spin)
You've ridden in rain, puddles, or wet conditions
Bearings make a grinding or scraping sound
You haven't cleaned them in 3–6 months of regular riding

Replace your bearings if:

Wheels wobble laterally (bent axle or blown bearing race)
Bearings make a clicking, rattling, or metallic crunching noise after cleaning
Shields are gone and bearings were exposed to grit for extended time
Bearings have visible rust that won't clean off

Good bearings (Bones Reds, $17–20) are cheap enough to replace rather than spending significant time cleaning heavily damaged ones. Clean regularly to avoid getting to that point.

What You Need

Solvent — acetone (nail polish remover), 91%+ isopropyl alcohol, or dedicated bearing cleaner. Acetone is fastest; IPA is safer and more readily available.
Small container — a glass jar or metal container that seals. Don't use plastic — acetone dissolves some plastics.
Pin or safety pin — to pop off bearing shields
Bearing oil — thin, purpose-made oil. Bones Speed Cream, Zealous Bearing Lube, or 3-in-1 sewing machine oil. Don't use WD-40 (it evaporates quickly and leaves residue) or thick grease (too viscous, slows rotation).
Skate tool or socket wrench — to remove wheels
Paper towels or cloth

Step-by-Step: Cleaning Skateboard Bearings

Step 1: Remove the Wheels

Use a skate tool or 1/2" socket to remove the axle nut from each wheel. Slide the wheel off the axle. You'll have 8 bearings total — 2 per wheel (one on each side).

Step 2: Pop the Bearings Out

The easiest bearing removal tool you already have: the truck axle. Hook the edge of the bearing on the axle tip (just inside the wheel), then lever the wheel sideways to pop the bearing out. It takes a little force — angle the wheel so the axle acts as a wedge against the bearing inner race, then push sideways. The bearing will pop out cleanly.

Do this for both bearings in each wheel. Keep them together in sets — though all skateboard bearings are the same size (608), it's good habit to keep them organized.

Step 3: Remove the Shields

Most bearings have removable rubber or metal shields on the outer face. Look for a small C-shaped retaining clip around the inside edge of the shield.

Rubber shields: Push a pin into the rubber near the inner race and pry gently. The shield usually pops off easily.
Metal shields with C-clip: Use a pin to hook and remove the C-clip first (it sits in a groove around the inner ring), then the shield lifts out.

Keep shields somewhere you won't lose them. A small bowl or the center of a folded paper towel works.

Note: Some sealed bearings (like certain Bronson models) have permanently-sealed shields not meant to be removed. If you can't find a C-clip and the shield won't budge without deforming, soak the whole bearing as-is with the shield on — it just takes longer.

Step 4: Soak in Solvent

Drop the open bearings into your container, then pour in enough solvent to cover them. Seal the container and shake for 30–60 seconds, then let soak for 5–10 minutes.

For very dirty bearings, repeat: pour out the dirty solvent, add fresh, soak again. You'll see how dirty the bearings were by the color of the spent solvent — brown to black is normal if it's been a while.

Solvent options:

Acetone — fastest, most effective, dissolves grease quickly. Strong fumes — use outdoors or with ventilation. Flammable.
Isopropyl alcohol (91%+) — nearly as effective, much safer to work with, slower evaporation. Widely available at any pharmacy.
Mineral spirits / paint thinner — slower but works, leaves some residue, requires thorough drying.
Dedicated bearing cleaners (Bones Bearing Cleaner, etc.) — convenient, packaged in a cleaning kit with a cup, work well but are mostly isopropyl.

Step 5: Dry the Bearings Completely

This step is critical. Any solvent left in the bearing will dilute the lubricant you're about to add, causing it to run out quickly or not protect properly.

Shake excess solvent off, then:

Best: Compressed air — blow through the bearing while spinning it. Done in seconds.
Good: Set bearings on a clean paper towel and let air dry for 15–30 minutes. Spin them occasionally to clear solvent from the races.
Also works: Hair dryer on low heat, 1–2 minutes. Don't overheat — you can warp the bearing cage.

Test dryness: spin the bearing on your fingertip. It should spin freely and quietly. If it still sounds gritty or damp, it needs more drying time.

Step 6: Lubricate

Apply 1–2 drops of bearing oil into the open bearing, directly onto the balls. Spin the bearing 10–15 times to distribute the oil through the races.

Less is more with bearing oil. Over-lubing is worse than under-lubing — excess oil attracts dirt, fills the bearing with muck faster than dry riding would, and actually slows the bearing down initially. One drop per bearing is usually enough. Two is fine for cruiser bearings that see a lot of damp roads.

What to use:

Bones Speed Cream — the most popular choice, thin oil, works great
Zealous Bearing Lube — another solid option
Sewing machine oil (3-in-1) — cheap and works, available everywhere
Avoid: WD-40 — it's a water displacer, not a lubricant. It evaporates and leaves behind a sticky residue that attracts dirt. Some skaters use it in an emergency but it's not a substitute for real bearing lube.
Avoid: thick grease — too viscous, dramatically slows rotation, designed for high-load bearings not speed applications.

Step 7: Replace Shields and Reinstall

Press the rubber or metal shields back into place — they should snap in with light finger pressure. Reinstall the C-clip if your bearings had one, pressing it into the groove with a pin.

Press bearings back into wheels: place the bearing on a hard surface, position the wheel over it, and press down firmly until the bearing seats flush with the wheel hub. Repeat for the other side.

Slide wheels back onto axles. Tighten axle nuts until snug, then back off a quarter turn — wheels should spin freely with no lateral wobble.

How Often to Clean

Every 3–6 months under normal dry conditions and regular riding
After every rain session or if you ride through puddles — water rusts bearings fast
When you notice drag — if rolling feels slower than usual, don't wait for a scheduled cleaning

If you ride exclusively on dry smooth surfaces, bearings can go longer between cleanings. If you skate through cities in variable weather, they need more attention.

Prevention: Making Bearings Last Longer

Avoid skating in rain. Water is the number one killer of bearings. If you get caught in rain, dry your board and spin the wheels to throw out as much water as possible before it sits.
Keep wheels slightly loose. Over-tightening axle nuts presses the bearing races together, creating drag and wear. Wheels should spin freely with no wobble.
Don't slide on the wheels. Power slides and certain grinds put lateral stress on bearings they're not designed for.
Store the board indoors. Humidity and temperature swings are hard on bearings over time.

Frequently Asked Questions

Can I use WD-40 to clean skateboard bearings?

You can use it as a solvent to displace water after getting wet — spray, spin, let it run out. But don't leave it as a lubricant. WD-40 evaporates within days, leaving a thin residue that actually attracts dirt. Always follow up with proper bearing oil.

How long do skateboard bearings last?

Well-maintained bearings can last years. Neglected bearings left to rust or pack with grit can fail in weeks. Cleaning every few months and keeping them out of water is the biggest factor. Budget bearings from reputable brands (Bones Reds) clean up just as well as expensive ones.

Do I need to remove the shields to clean?

For best results, yes. With shields on, solvent reaches the balls but can't fully flush grit from the inner races. If shields are permanently sealed, soak longer and repeat with fresh solvent — you'll still get 80%+ of the cleaning effect.

My bearings still sound rough after cleaning — what now?

A little roughness on the first few spins after cleaning is normal — the oil needs to distribute. If it persists after a few minutes of riding, the bearing balls or races are damaged. Replace them. At $15–20 for a quality set of 8, it's not worth riding on damaged bearings.