R4-2RS Ball Bearing

The R4-2RS Ball Bearing is an imperial-size deep groove ball bearing engineered for compact applications requiring high-speed operation, quiet performance, and dependable internal lubrication protection.

Using inch dimensions, this model belongs to the inch-series bearing family commonly used in American equipment, power tools, compact motors, and precision mechanical systems. Its double rubber seals (2RS) help preserve internal grease while reducing exposure to fine dust and light contaminants, supporting improved operational stability during continuous operation.

Manufactured from hardened chrome steel and supplied factory pre-lubricated, the R4-2RS delivers reduced vibration, smooth rotation, and dependable performance in light industrial and precision applications.

Common Applications for the R4-2RS

The R4-2RS is frequently used in compact equipment requiring precision and continuous operation, including:

• Light-duty power tools
• Compact motors
• Automation equipment
• Light conveyor systems
• Machinery using imperial dimensions
• Ventilation systems
• Hobby and RC applications
• Small precision mechanical assemblies

The R Series is recognized for excellent adaptability in compact inch-dimension applications and dependable high-speed response.

Main Features of the R4-2RS

Imperial sizing for specialized applications

This bearing uses inch dimensions and is widely applied in American equipment and systems requiring inch-series bearings.

Double rubber seals

Rubber seals help preserve internal lubrication while providing additional protection against fine dust and moderate moisture.

Excellent high-speed performance

The R4-2RS supports medium and high-speed applications with reduced heat generation and stable operation.

Smooth and quiet operation

Deep groove geometry contributes to reduced vibration and improved operational stability in compact equipment.

Chrome steel construction

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

When Is the R4-2RS Commonly Recommended?

This model is typically selected when applications require:

• imperial dimensions
• compact equipment
• continuous-duty operation
• additional lubrication protection
• quiet performance

Difference Between R4-2RS and R4-ZZ

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

R4-2RS

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

R4-ZZ

• metal shields
• lower rolling resistance
• improved extreme RPM response
• better suited for dry environments

Recommendations for Better Performance

To improve bearing service life:

• Use proper installation tools
• Avoid direct installation impact
• Verify shaft alignment
• Control operating temperature
• Monitor excessive 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 2RS mean on a bearing?

“2RS” indicates rubber seals on both sides of the bearing.

Does the R4-2RS come pre-lubricated?

Yes. The bearing comes factory pre-lubricated.

Is this bearing suitable for high-speed operation?

Yes. The R4-2RS is designed for medium and high-speed industrial applications.

Can this model be used in power tools?

Yes. The R4-2RS is widely used in power tools, compact motors, and small rotating systems.

What is the advantage of rubber seals?

They help preserve internal lubrication while reducing exposure to fine dust and moderate moisture.