6204 ZZ CT 20x47x14 Deep Groove Ball Bearing

What Is the 6204 ZZ CT Bearing?

The 6204 ZZ CT is a single-row deep groove ball bearing with dimensions 20x47x14 mm. It features double metal shields (ZZ) that protect the rolling elements from dust and contamination while retaining the factory-applied lubricant. Designed for high-speed operation, the bearing supports both radial loads and moderate axial loads in both directions, making it one of the most widely used bearing types in industrial and automotive applications.

Bearing Design

The 6204 ZZ CT features:

• Single-row deep groove ball bearing
• Deep raceway design
• Double metal shields (ZZ)
• Hardened steel balls
• Pressed steel cage
• Cylindrical bore
• Factory-lubricated construction

The metal shields reduce contamination while maintaining low friction and high rotational speed capability.

Technical Specification

Part Number: 6204 ZZ CT

Bearing Type: Deep Groove Ball Bearing

Design: Single Row

Inside Diameter (d): 20 mm

Outside Diameter (D): 47 mm

Width (B): 14 mm

Seal Type: ZZ - Double Metal Shields

Bore Type: Cylindrical

Cage: Pressed Steel

Material: Bearing Steel

Lubrication: Factory Greased

How Does a Deep Groove Ball Bearing Work?

A deep groove ball bearing uses hardened steel balls running between precision-machined raceways to minimize friction between rotating and stationary components.

Its primary functions include:

• Supporting radial loads
• Carrying moderate axial loads in both directions
• Reducing rotational friction
• Providing smooth and quiet operation
• Increasing equipment reliability
• Extending service life

Typical Applications

The 6204 ZZ CT is widely used in:

• Electric motors
• Pumps
• Gearboxes
• Fans and blowers
• Compressors
• Industrial machinery
• Agricultural equipment
• Conveyor systems
• Power tools
• Industrial automation
• OEM equipment
• Maintenance and Repair (MRO)

Advantages of the 6204 ZZ CT Bearing

Key benefits include:

• High-speed capability
• Low operating friction
• Double metal shields for contamination protection
• Factory-applied grease
• Easy installation
• Reliable radial and axial load support
• Long service life
• Versatile industrial applications

Installation Recommendations

Before installation, verify:

• Shaft diameter
• Housing bore
• Proper bearing fit
• Alignment
• Operating temperature
• Working conditions

Correct installation helps maximize bearing performance and service life.

Frequently Asked Questions (FAQ)

What are the dimensions of the 6204 ZZ CT bearing?

The bearing has a 20 mm bore, 47 mm outside diameter, and 14 mm width.

What does the ZZ designation mean?

ZZ indicates double metal shields that protect the bearing against dust and contamination while retaining lubricant.

Is the bearing pre-lubricated?

Yes. The 6204 ZZ CT is supplied with factory-applied grease and is ready for installation.

What types of loads can it support?

It is designed to support radial loads and moderate axial loads acting in both directions.

Where is the 6204 ZZ CT commonly used?

It is widely used in electric motors, pumps, gearboxes, fans, compressors, industrial machinery, agricultural equipment and OEM applications.

Are metal shields better than rubber seals?

Metal shields provide excellent protection against dust while generating less friction than contact rubber seals, making them ideal for higher-speed applications.