Introduction
Bearings play a crucial role in modern machinery, ensuring smooth motion and reducing friction. Among the various types, double row angular contact ball bearings provide enhanced load-carrying capacity and stability. One of the most widely used double row bearings is the 5204ZZ bearing. This article explores the 5204ZZ bearing specifications, its comparison with 5204-2RS, applications, and a comprehensive size chart for double row ball bearings.
What is a 5204ZZ Bearing?
The 5204ZZ bearing is a double row angular contact ball bearing with metal shields (ZZ) on both sides, protecting the bearing from contamination while allowing it to retain lubrication. It is designed to handle radial and axial loads in both directions, making it an ideal choice for various industrial applications.
5204ZZ Bearing Specifications
Bearing Type: Double Row Angular Contact Ball Bearing
Shield Type: ZZ (Metal Shields on Both Sides)
Material: High-Quality Chrome Steel (SAE 52100)
Inner Diameter (ID): 20 mm
Outer Diameter (OD): 47 mm
Width: 20.6 mm
Dynamic Load Rating: 19.3 kN
Static Load Rating: 11.3 kN
Limiting Speed (Grease): 10,000 RPM
Limiting Speed (Oil): 12,000 RPM
What Size is a 5204ZZ Bearing?
A 5204ZZ bearing has the following standard dimensions:
Inner Diameter (ID): 20 mm
Outer Diameter (OD): 47 mm
Width: 20.6 mm
These dimensions make it suitable for applications requiring compact yet strong bearings with high load-carrying capabilities.
Which Bearing is Better: 5204ZZ or 5204-2RS?
Key Differences Between 5204ZZ and 5204-2RS
| Feature | 5204ZZ | 5204-2RS |
| Sealing Type | Metal Shields (ZZ) | Rubber Seals (2RS) |
| Friction Level | Lower | Higher |
| Protection Against Contaminants | Moderate | Superior |
| Speed Rating | Higher | Lower |
| Lubrication Retention | Less than 2RS | Excellent |
| Application Suitability | High-speed environments | Dusty or moisture-prone conditions |
5204ZZ is better for high-speed applications due to its lower friction.
5204-2RS is better for dirty or wet environments due to its enhanced sealing.
For general applications, both are suitable; the choice depends on environmental conditions and performance needs.
What Can 5204ZZ Bearing Be Used for?
The 5204ZZ bearing is widely used in industrial and commercial machinery due to its durability and ability to withstand both radial and axial loads.
Common Applications:
Conveyor Systems: Ensures smooth and efficient movement of materials.
Electric Motors: Provides stability and reduces wear and tear.
Agricultural Equipment: Used in tractors and harvesters for reliability.
Automotive Industry: Found in steering and wheel applications.
Printing Machinery: Helps in precise roller movements.
Aerospace Equipment: Utilized in aircraft mechanisms requiring precision.
The 5204ZZ bearing’s high-speed capability, moderate protection, and ability to handle combined loads make it a preferred choice in these applications.
Double Row Ball Bearing Size Chart
Below is a size chart for commonly used double row ball bearings, including the 5204ZZ bearing.
| Bearing Number | Inner Diameter (mm) | Outer Diameter (mm) | Width (mm) |
| 5200 | 10 | 30 | 14.3 |
| 5201 | 12 | 32 | 14.3 |
| 5202 | 15 | 35 | 15.9 |
| 5203 | 17 | 40 | 17.5 |
| 5204 | 20 | 47 | 20.6 |
| 5205 | 25 | 52 | 20.6 |
| 5206 | 30 | 62 | 23.8 |
| 5207 | 35 | 72 | 27 |
| 5208 | 40 | 80 | 30.2 |
| 5209 | 45 | 85 | 30.2 |
| 5210 | 50 | 90 | 30.2 |
These bearings are designed to accommodate high radial and axial loads, making them suitable for various demanding applications.
Conclusion
The 5204ZZ bearing is an efficient and durable double row angular contact ball bearing, widely used in industrial, automotive, and aerospace sectors. Its shielded design (ZZ) ensures reduced friction and high-speed performance, making it an excellent choice for applications where moderate contamination protection and long service life are required.
When choosing between 5204ZZ and 5204-2RS, consider the operating environment:
For high-speed and cleaner environments: 5204ZZ is ideal.
For dirty or moisture-prone environments: 5204-2RS is better.
By understanding the specifications, comparisons, and applications of the 5204ZZ bearing, users can make informed decisions, ensuring optimal performance and longevity.
For high-quality 5204ZZ bearings, BYWB Bearing offers reliable and precision-engineered products. Visit BYWB Bearing to explore more options!
