608-ZZ Ball Bearing

The 608-ZZ Ball Bearing is one of the most widely used deep groove ball bearings on the market, engineered for compact applications requiring high rotational speed, low rolling resistance, and smooth operation in lightweight and precision equipment.

Its compact profile combined with double metal shields (ZZ) makes this model extremely versatile for high-speed applications. The 608-ZZ is widely used in skateboards, roller skates, small electric motors, power tools, and automated systems due to its excellent rotational efficiency and reduced vibration.

Manufactured from chrome steel and supplied factory pre-lubricated, the bearing delivers durability, dependable operational stability, and strong performance in continuous medium and high-RPM applications. The PGN Bearings version also features C3 clearance, supporting elevated speed and operating temperature conditions.

Common Applications for the 608-ZZ

The 608-ZZ is frequently used in compact applications requiring lightweight and efficient rotation, including:

• Skateboards
• Roller skates
• Inline skates
• Small electric motors
• Power tools
• Automated systems
• RC systems
• Compact fans
• Precision equipment

The 608 model is recognized worldwide for combining high-speed capability, low friction, and excellent adaptability in compact equipment.

Main Features of the 608-ZZ

Metal shields for high-RPM operation

Metal shields help reduce rolling resistance and support efficient high-speed performance.

Excellent for skate and light rotating applications

The 608-ZZ is one of the most commonly used bearings in skateboards and roller applications thanks to its smooth operation and reduced vibration.

C3 clearance for elevated operating speeds

C3 clearance provides additional internal clearance, supporting high-RPM applications and thermal expansion during continuous operation.

Smooth and stable operation

Deep groove geometry delivers consistent rotation, reduced vibration, and dependable operational stability.

Chrome steel construction

Manufactured from hardened chrome steel to provide dependable mechanical strength and long operational life in rotating applications.

When Is the 608-ZZ Commonly Recommended?

This model is typically selected when applications require:

• high rotational speed
• reduced rolling resistance
• compact equipment
• continuous-duty operation
• strong energy efficiency

Difference Between 608-ZZ and 608-2RS

Although both belong to the same series, there are important differences between the configurations.

608-ZZ

• metal shields
• lower rolling resistance
• improved high-RPM performance
• ideal for dry environments

608-2RS

• rubber seals
• improved grease retention
• additional protection against light contaminants
• focused on reduced maintenance

Installation Recommendations

To improve bearing service life:

• Avoid installation impact
• Use proper installation tools
• Verify shaft alignment
• Control excessive operating temperature
• Monitor abnormal vibration

PGN Bearings Product Line

PGN Bearings supplies components for industrial automation, mechanical power transmission, and rotating systems. The catalog includes deep groove ball bearings, mounted bearings, pillow blocks, roller chains, flanged bearings, and solutions engineered for continuous industrial applications.

FAQ

What does ZZ mean on a bearing?

“ZZ” indicates metal shields on both sides of the bearing.

Does the 608-ZZ come pre-lubricated?

Yes. The bearing comes factory pre-lubricated.

What does C3 clearance mean?

C3 indicates greater internal clearance than standard bearings, commonly used for high-speed and elevated-temperature applications.

Can this bearing be used in skateboards?

Yes. The 608-ZZ is widely used in skateboards, roller skates, and inline skates.

Is this model suitable for high-speed operation?

Yes. The 608-ZZ is designed for medium and high-speed applications with dependable operational stability.