6205 vs 6203 Bearing – What’s the Difference & Which One Do You Need?

Choosing between a 6205 bearing and a 6203 bearing comes down to size, load capacity, and application. While both are deep groove ball bearings, they serve different purposes depending on your machinery.

6205 Bearing Dimensions (25x52x15)

The 6205 bearing is one of the most widely used industrial bearings due to its balance of size and strength.

• Inner Diameter: 25mm
• Outer Diameter: 52mm
• Width: 15mm

👉 Learn more in our full guide: 6205 bearing dimensions and specifications

6203 Bearing Dimensions (17x40x12)

The 6203 bearing is smaller and typically used in lighter-duty applications.

• Inner Diameter: 17mm
• Outer Diameter: 40mm
• Width: 12mm

Key Differences Between 6205 and 6203 Bearings

Feature	6205 Bearing	6203 Bearing
Inner Diameter	25mm	17mm
Outer Diameter	52mm	40mm
Width	15mm	12mm
Load Capacity	Higher	Lower
Applications	Motors, pumps, conveyors	Small motors, tools, appliances

Which Bearing Should You Choose?

Choose a 6205 bearing if you need higher load capacity and durability in industrial environments. The 6203 bearing is better suited for smaller, lighter-duty equipment.

6205 Bearing Variations: Open vs ZZ vs 2RS

The 6205 bearing comes in multiple configurations:

• Open: No seals, best for clean environments
• ZZ: Metal shields, protects from dust
• 2RS: Rubber seals, protects from moisture and debris

👉 Explore available options here: 6205 deep groove ball bearing product page

Common Applications

Both 6205 and 6203 bearings are used across many industries, including:

• Electric motors
• Pumps
• Conveyors
• Agricultural equipment

Need Help Choosing the Right Bearing?

If you're unsure which bearing fits your application, we can help you find the exact match based on your requirements.

👉 Request a quote here: Get a custom bearing quote

Final Thoughts

Understanding the differences between 6205 and 6203 bearings ensures you select the right size and performance level for your equipment. For most industrial applications, the 6205 bearing remains one of the most reliable and widely used options available.