R4-ZZ Ball Bearing

The R4-ZZ Ball Bearing is an imperial deep groove ball bearing engineered for compact applications requiring high rotational speed, low rolling resistance, and dependable operational efficiency in continuous-duty systems.

Equipped with double metal shields (ZZ), this bearing helps reduce entry of light particles while maintaining low rolling resistance, making it ideal for compact motors, industrial tools, HVAC equipment, and high-RPM mechanical systems. Manufactured from chrome steel and supplied factory pre-lubricated, the bearing delivers smooth operation, rotational stability, and long service life.

Applications for the R4-ZZ

The R4-ZZ is commonly used in compact equipment and rotating mechanical systems, including:

• Small electric motors
• Power tools
• HVAC equipment
• Industrial fans
• Automated machinery
• Precision equipment
• Light conveyor systems
• Imperial-size industrial applications

R series bearings are commonly used in North American equipment and inch-based industrial systems.

Features of the R4-ZZ Ball Bearing

Double metal shields

Metal shields help reduce entry of light particles while supporting lower operational friction in high-speed applications.

Excellent high-speed performance

Deep groove geometry supports efficient continuous high-speed operation with reduced heat generation.

Smooth and quiet operation

This bearing delivers consistent rotation, reduced vibration, and dependable performance in compact industrial systems.

Chrome steel construction

Manufactured from hardened chrome steel to provide dependable mechanical strength and long operational durability.

Compact structure

The compact profile of the R4-ZZ supports applications with limited internal space and high rotational efficiency requirements.

When to Use a ZZ Bearing

ZZ bearings are commonly recommended for:

• High-RPM equipment
• Dry environments
• Continuous-duty applications
• Compact systems
• Low-friction machinery

2RS bearings are generally selected when stronger sealing protection is required against water and external debris.

Usage Recommendations

To improve bearing service life:

• Check shaft alignment
• Avoid excessive impacts
• Control abnormal vibration
• Monitor operating temperature
• Use proper installation methods

PGN Bearings Product Line

PGN Bearings supplies industrial components for rotating systems and mechanical power transmission applications. The product line includes ball bearings, roller chains, pillow block bearings, flanged bearings, steel balls, and additional products engineered for dependable continuous industrial performance.

FAQ

What does ZZ mean on a bearing?

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

Does the R4-ZZ come pre-lubricated?

Yes. The bearing comes factory pre-lubricated.

Is this bearing suitable for high-speed operation?

Yes. The R4-ZZ is designed for high-speed industrial and low-friction applications.

Can this bearing be used in electric motors?

Yes. The R4-ZZ is widely used in compact motors, industrial tools, and HVAC equipment.

What is the advantage of metal shields?

Metal shields help reduce friction and improve performance in high-RPM applications.