Skateboard Bearing Sizes: What You Need to Know

What size bearings do skateboards use?

All standard skateboard completes use 608-size bearings, the universal fit for nearly every skateboard wheel. Each has an 8mm axle (or inner diameter), a 22mm outer diameter, and a 7mm width. These skateboard bearing dimensions work seamlessly with most skateboard trucks, skateboard decks, and skate wheels—keeping your setup spinning smooth from park to downhill.

Understanding Skateboard Bearing Dimensions

Every skateboard wheel holds two ball bearings that sit in the wheel hub bearing, allowing friction-free rotation. The standard 8mm bearings (608 size) are used across skateboards, longboards, and even roller skates and inline skates.

FAQ: Are all skate bearings the same size?
Yes—most skateboards use the same size bearing. The differences lie in materials, shields, and precision levels, not the actual dimensions.

 Related reading: Skateboard Truck Sizes Made Simple: Ride Better, Turn Smoother

ABEC Scale and Bearing Precision

You’ve probably seen the ABEC scale on bearing packaging. It measures precision and tolerance, not necessarily speed.

• ABEC-3: Reliable and smooth for daily skating.
• ABEC-5: Balanced for cruisers and commuters.
• ABEC-7 and up: Built for high-speed and performance riding.

FAQ: Does a higher ABEC bearing mean faster skating?
Not always. Speed depends on lubrication, cleanliness, and wheel quality. A clean, well-lubed ABEC bearing often outperforms a higher-rated one that’s clogged or dry.

Get the full picture on wheel performance: Skateboard Wheels 101: Types, Sizes, and Styles Explained

Steel Bearings vs. Ceramic Bearings

Most skateboard setups use either steel bearings or ceramic bearings.

• Steel bearings are durable, affordable, and built for everyday skating.
• Ceramic bearings use ceramic balls that resist heat and friction, offering a faster, smoother roll.

Some premium brands, like Bones Bearings, even combine stainless steel bearing casings with ceramic balls for longevity. Their Bones Speed Cream lubricant keeps your setup fast and quiet.

FAQ: Are Swiss bearings better?
Yes—Swiss bearings like Bones Swiss are precision-engineered skate-rated options known for exceptional performance and consistency.

How Roller Bearings and Spacers Work

Inside each wheel, roller bearings use tiny steel balls to reduce friction as your board rolls. A spacer sits between each pair of skate bearings, keeping them aligned and evenly distributed.

Other bearing types, like needle roller bearings or deep groove ball bearings, are used in industrial applications—but skateboarders rely on 608 bearings for their balance of strength, spin, and durability.

FAQ: Do you need spacers for your skate bearings?
Yes—especially for carving or downhill riding. They protect your bearings, reduce side pressure, and keep your wheels spinning smoothly.

Find your perfect board pairing: Skateboard Size Chart: How to Choose the Right Deck for Your Style

Bearing Shields and Rubber Seals

Most skate bearings include a metal or rubber seal to keep out dust and debris. Rubber seals are easier to remove when cleaning, making them ideal for maintaining high-quality bearings.

FAQ: What’s the difference between rubber seals and metal shields?
Rubber seals keep out moisture better and are easier to clean, while metal shields protect from impact and dirt during heavy roller skating or street sessions.

How to Maintain and Clean Skate Bearings

Clean bearings roll faster and last longer. Use a solvent or cleaner to remove debris, then reapply Bones Speed Cream or a similar lubricant.

Maintenance tips:

• Avoid skating through water or sand.

• Dry bearings completely after cleaning.

• Replace worn shields or seals as needed.

FAQ: How often should bearings be cleaned?
Every few weeks—or whenever your ride starts to feel rough or noisy.

Choosing the Right Skateboard Bearings

Finding the right skateboard bearings depends on your setup, your terrain, and how you like to roll. Sector 9 bearings are designed for riders who want reliable speed, simple maintenance, and that signature smooth Sector 9 feel—whether cruising the boardwalk or charging steep hills.

The Blaze Bearings Pack brings all-around performance at an accessible price. Each set includes eight ABEC-5 stainless steel bearings with a built-in half spacer for easy installation. They come packed with Sector 9’s famous refried grease, offering long-lasting lubrication with minimal fuss. The no inner shield design makes them super easy to clean—perfect for riders who want a fast, low-maintenance setup.

For those chasing precision and speed, the Platinum Bearings Pack takes things up a notch. These ABEC-9 bearings feature seven stainless steel balls, honed for high tolerance and corrosion resistance. A removable rubber shield keeps dirt out while making cleaning quick and simple. The nylon ball retainer and grease/oil blend strike the perfect balance between longevity and flow.

From daily cruising to high-speed carving, Sector 9’s skate rated bearings are built to handle the ride. Each set reflects the brand’s commitment to quality, innovation, and that surf-inspired glide that keeps riders rolling smooth.

• Steel bearings: Best for everyday riders and park sessions.
• Ceramic bearings: Ideal for high-speed runs and long cruises.
• Micro bearings: Used in specialty wheels like inline skates.

Common Bearing FAQs

• What are the best bearings for longboards?
  Go for ABEC-5 or higher, with built-in spacers or stainless steel bearings for durability.
• Can you use skateboard bearings in roller skates?
  Yes—most roller skate bearings and inline skates use the same 608 size bearing.
• Do Bones Bearings fit all skateboard wheels?
  Absolutely. Bones Bearings are skate rated to fit any standard skateboard wheel and 8mm axle setup.
• Can you reuse old bearings?
  Yes—just make sure they spin freely and the seals are intact before reinstalling.

The Bottom Line

When it comes to skateboard bearings, the size bearing is simple: one standard, endless performance potential. Whether you’re riding steel bearings, Swiss bearings, or experimenting with ceramic, the key to a smooth ride comes down to precision, maintenance, and care.

Clean bearings, proper spacers, and the right fit for your skateboard deck will keep your setup rolling fast, smooth, and ready for whatever line you choose next.

Key Takeaways

•  All skateboard setups use 8mm (608) bearings, including every Sector 9 board.
• Sector 9 Blaze Bearings offer durable, easy-to-clean performance with built-in spacers—ideal for everyday cruising.
  
• Sector 9 Platinum Bearings deliver ABEC-9 precision and long-lasting speed for riders who want maximum glide.
• Keep bearings spinning smooth with regular cleaning and a light relube for reduced friction and longer life.
• Choosing the right bearings keeps your ride flowing—whether you’re carving, cruising, or bombing hills.